LUCA Forms, Letters, User Guides, and other Items

Local Update of Census Addresses (LUCA) Program

2010 LUCA User Guide Option 1 CR format

LUCA Forms, Letters, User Guides, and other Items

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5/30/2007 Draft 1

2010 Decennial Census
Local Update of Census Addresses (LUCA) Program
User Guide
Option 1 – Title 13 Full Address List Review
Computer-Readable Format

110011

August 2007

TABLE OF CONTENTS
Chapter 1
Introduction to the 2010 Decennial Census Local Update of Census Addresses
(LUCA) Program

The 2010 Decennial Census Local Update of Census Addresses (LUCA) Program.................. 1
Background .................................................................................................................................. 2
The Census Address List Improvement Act.............................................................................2
The Census Bureau’s Master Address File (MAF) ..................................................................2
The Topologically Integrated Geographic Encoding and Referencing (TIGER®)
Database ..................................................................................................................................3
LUCA Program Responsibilities................................................................................................... 3
Census Bureau’s LUCA Program Responsibilities ..................................................................3
Participant’s LUCA Program Responsibilities ..........................................................................4
Training and Technical Support ................................................................................................... 5
Schedule ...................................................................................................................................... 5
Chapter 2
Before You Begin Your Review

Introduction .................................................................................................................................. 7
What is a Housing Unit?............................................................................................................... 7
What are Group Quarters?........................................................................................................... 8
Unacceptable Types of Housing Units and Group Quarters........................................................ 8
Census Bureau Addresses .......................................................................................................... 9
Residential and Nonresidential Addresses ..............................................................................9
Address Formats......................................................................................................................9
City-style Address Format................................................................................................... 9
Noncity-Style Address Format ............................................................................................ 9
Census Tract.............................................................................................................................. 10
Census Block ............................................................................................................................. 10
What is Geocoding?................................................................................................................... 11
Strategies for Reviewing the Census Bureau’s Address List..................................................... 11
Local Address Sources .............................................................................................................. 11
Chapter 3
The LUCA Program’s Computer- Readable Address List and Address Count List 13
Introduction ................................................................................................................................ 13
Protecting Census Bureau Address Information........................................................................ 13
The File Names.......................................................................................................................... 15
Software Requirements.............................................................................................................. 17
Opening the Files ....................................................................................................................... 17
The File Formats ........................................................................................................................ 18
Address List ...........................................................................................................................18
Example – Computer-Readable Address List File Record Layout ................................... 21
Example – Pipe-delimited Address List File – City-style Address .................................... 22
Example – Pipe-delimited Address List File – Noncity-style Address .............................. 23
Address Count List.................................................................................................................24
Example – Address Count List File Record Layout .......................................................... 25
Example – Pipe-delimited Address Count List File........................................................... 26

Chapter 4
Reviewing and Updating the Address List File

Action Codes for Updating the Address List File ....................................................................... 27
A – Adding Addresses............................................................................................................27
C – Correcting Addresses ......................................................................................................29
Examples .......................................................................................................................... 30
1. Correcting a Street Name .........................................................................................30
2. Correcting the Location of a Street and its Corresponding Addresses.....................31
3. Correcting an Incorrect House Number or an Incorrect Apartment/Unit
Number...........................................................................................................................31
4. Conversion of a Housing Unit to a Multi-Unit Structure ............................................31
5. Conversion of a Multi-Unit Structure to a Single Housing Unit .................................32
6. Conversion of a Group Quarters to a Housing Unit ..................................................32
7. Conversion of a Single Housing Unit to a Group Quarters .......................................33
D – Deleting Addresses .........................................................................................................33
Examples .......................................................................................................................... 33
1. Deleting Addresses that no Longer Exist..................................................................33
2. Deleting Duplicate Addresses...................................................................................34
J – Not in Jurisdiction Addresses...........................................................................................34
Example ............................................................................................................................ 34
N – Nonresidential Addresses ...............................................................................................34
Example ............................................................................................................................ 34
Saving the File ........................................................................................................................... 35
Chapter 5
Reviewing and Updating the Address Count List File

The Address Count List File....................................................................................................... 36
Census Bureau Maps................................................................................................................. 36
Reviewing and Editing the Address Count List File ................................................................... 36
Example ............................................................................................................................ 37
Saving the File ........................................................................................................................... 37
Chapter 6
The Census Bureau Maps

Introduction ................................................................................................................................ 39
Reading a Census Bureau Paper Map ..................................................................................39
The Map Sheet to Block Number Relationship List ................................................................... 42
Examples .......................................................................................................................... 44
Adding a new street and associated address ranges ....................................................44
Correcting a street name on the paper map ..................................................................45
Correcting the location of a street on the paper map.....................................................46
Deleting a street on the paper map................................................................................47
Boundary and Annexation Survey (BAS) Paper Maps .............................................................. 47
Shapefiles .................................................................................................................................. 48
Submitting Shapefile Feature Information.................................................................................. 49
The Census Bureau’s Shapefile Coordinate System and Projection Information .................49
General File Setup Guidelines ...............................................................................................49
Changing Our Coordinate System to Match Yours................................................................49
Feature Information................................................................................................................50
Updating the Feature Shapefile .............................................................................................50
Edges Layer Data Dictionary .................................................................................................51
Census Feature Classification MTFCC to CFCC Crosswalk.................................................53
Change Type Codes for Feature Corrections........................................................................54

Examples .......................................................................................................................... 55
1. Adding a Feature to the Edges Layer .......................................................................55
2. Correcting a Feature Name.......................................................................................55
3. Procedure for changing the MTFCC of an existing feature ......................................55
4. Deleting a feature......................................................................................................55
5. Moving a street..........................................................................................................56
Metadata .................................................................................................................................... 58
Metadata Requirements.........................................................................................................58
Digital File Submission............................................................................................................... 59
Chapter 7
Submitting Your LUCA Program Updates

Submitting LUCA Program Updates .......................................................................................... 60
Preparing the Address List and Address Count List Files for Submission ............................60
Sorting the Census Bureau’s Paper Maps for Submission....................................................60
Preparing the Shapefiles for Submission...............................................................................61
Shipping Your LUCA Materials .................................................................................................. 61
Chapter 8
Returning Or Destroying Census Bureau Title 13, U.S.C. Materials

Conclusion ................................................................................................................................. 62
Returning Census Bureau Title 13, U.S.C. Materials ............................................................62
Destroying Census Bureau Title 13, U.S.C. Materials...........................................................63
APPENDICES
Appendix A
Confidentiality and Security Guidelines ..................................................................................... 64
Appendix B
The Map Legend ........................................................................................................................ 70
Appendix C
Physical Location Description and Street Type Abbreviation Examples ................................... 74
Appendix D
Unit Designation Abbreviation Examples................................................................................... 75
Appendix E
Confidentiality Agreement Form ................................................................................................ 76
Appendix F
Inventory Form ........................................................................................................................... 77
Appendix G
Special Disclosure Notice .......................................................................................................... 78
Appendix H
Return or Destruction of Title 13, U.S.C. Materials Form .......................................................... 79
Glossary

Index

iii

TABLE OF FIGURES
Figure 3.1: Entity Identification Codes ..........................................................................................16
Figure 3.2: Computer-Readable Address List File Record Layout ...............................................21
Figure 3.3: Pipe-delimited LUCA Program Address List File – City-style Address.......................22
Figure 3.4: Pipe-delimited LUCA Program Address List File – Noncity-style Address.................23
Figure 3.5: Address Count List File Record Layout ......................................................................25
Figure 3.6: Address Count List File “Total Row” Layout ...............................................................25
Figure 3.7: Pipe-delimited Address Count List File.......................................................................26
Figure 5.1: Adding Local Counts to the Address Count List .........................................................37
Figure 6.1: Example of a Census Bureau Paper Map ..................................................................41
Figure 6.2: The Map Sheet to Block Number Relationship List....................................................43
Figure 6.3: Adding a New Street on the Paper Map .....................................................................44
Figure 6.4: Correcting a Street Name on the Paper Map .............................................................45
Figure 6.5: Correcting the Location of a Street on the Paper Map ...............................................46
Figure 6.6: Deleting Streets on the Paper Map ...........................................................................47
Figure 6.7: Edges Layer Data Dictionary ......................................................................................51
Figure 6.8: Census Feature Classification MTFCC to CFCC Crosswalk .....................................53
Figure 6.9: Change Type Codes for Feature Corrections.............................................................54
Figure 6.10: Example Attribute Table Updates.............................................................................56
Figure 6.11: Digital Road Correction Example ..............................................................................57

CHAPTER 1
INTRODUCTION TO THE 2010 DECENNIAL CENSUS LOCAL UPDATE OF CENSUS
ADDRESSES (LUCA) PROGRAM
The 2010 Decennial Census Local Update of Census Addresses (LUCA) Program
Background
The Census Address List Improvement Act
The Census Bureau’s Master Address File (MAF)
The Topologically Integrated Geographic Encoding and Referencing (TIGER®)
Database
LUCA Program Responsibilities
Census Bureau Responsibilities
Participant Responsibilities
Training and Technical Support
Schedule

The 2010 Decennial Census Local Update of Census Addresses (LUCA)
Program

The Local Update of Census Addresses (LUCA) Program is an integral part of
the 2010 Census activities that utilizes the expertise of tribal, state, and local
governments to improve the accuracy and completeness of the address list
used to take the census.
The Census Bureau invited the highest elected official of your jurisdiction to
participate in this program. Your jurisdiction selected Option 1, Title 13 Full
Address List Review in computer-readable format. This option allows you to:
•

Review the Census Bureau’s Address List for your jurisdiction.

•

Comment on any city-style 1 address in a census block on the Address
List using add, delete, correction, not in jurisdiction, or nonresidential
action codes and identify (flag) group quarters 2 addresses.

•

Challenge the count of addresses for any census block on the Address
Count List.
o For census blocks containing all noncity-style 3 addresses, you can
challenge only the count of addresses for census blocks on the
Census Bureau’s Address Count List; you cannot comment on
individual noncity-style addresses.

A city-style address consists of a house number and street name; for example, 201 Main Street. The address may or
may not be used for the delivery of mail and may include apartment numbers/designations or similar identifiers. See
Chapter 2 for a complete definition.
2
A group quarters is a place where people live or stay that is normally owned or managed by an entity or organization
providing housing and/or services for the residents. See Chapter 2 for a complete definition.
3
A noncity-style address does not use a house number and street name. This includes rural route and box number
addresses and highway contract route addresses, etc., which may include a box number, post office boxes and drawers,
and general delivery.

Chapter 1: Introduction to the 2010 Decennial Census Local Update of Census
Addresses (LUCA) Program

Note: For census blocks with a mix of city-style and noncity-style
addresses, you may comment on individual city-style addresses or
challenge the count of addresses for the census block, but not do both
within the same block. However, it is to your benefit and the Census
Bureau’s that you provide city-style address updates wherever
applicable, rather than challenging the count of addresses in a census
block.
•

Identify any additions, deletions, or corrections to boundaries, roads,
or other physical features on the Census Bureau paper maps or submit
an updated version of the digital map file (shapefile) provided by the
Census Bureau.

Background
The Census Address List Improvement Act

The Census Address List Improvement Act of 1994 (Public Law 103-430)
strengthened the Census Bureau’s partnership capabilities with tribal, state,
and local governments by expanding the methods the Census Bureau could use
to exchange address information. Designed to improve the accuracy of the
Census Bureau’s address list, the Act authorized the Census Bureau to provide
individual addresses to officials of tribal, state, and local governments who
agreed to conditions of confidentiality. Census 2000 marked the first
decennial census for which the Census Bureau could provide its address list
for review to governments that signed the required confidentiality agreement.
(See Appendix A for the terms of the LUCA Program Confidentiality and
Security Guidelines.)
The Census Bureau’s Master Address File (MAF)

In preparation for Census 2000, the Census Bureau created the Master Address
File (MAF) by merging the 1990 Address Control File 4 with the latest version
of the U.S. Postal Service’s (USPS) Delivery Sequence File 5 (DSF). The
MAF is a nationwide database of all addresses used to support many of the
Census Bureau’s operations. Besides containing mailing addresses and ZIP
Codes, an address record in the MAF also contains geographic information
about the location of addresses. In areas where there are noncity-style
addresses (e.g., rural route or post office box number), the address record may
contain additional information such as a location description.

The 1990 residential address list used to label questionnaires, control the mail response check-in operation, and
determine the nonresponse follow-up workload.
5
A computerized file containing all delivery point addresses serviced by the U.S. Postal Service (USPS). The USPS
updates the DSF continuously as its letter carriers identify addresses for new delivery points or changes in the status of
existing addresses.

Chapter 1: Introduction to the 2010 Decennial Census Local Update of Census
Addresses (LUCA) Program

The Topologically Integrated Geographic Encoding and Referencing
(TIGER®) Database

Address records in the MAF are linked to feature segments in the
Topologically Integrated Geographic Encoding and Referencing (TIGER®)
database. The TIGER® database includes the geographic coordinates and
names of all streets, water features, and other linear features, and boundaries
for all jurisdictions and statistical areas (census tracts6, census blocks 7, etc.)
used to tabulate decennial census data. The TIGER® database also includes
address ranges 8 along streets that have city-style addresses and the hierarchy
of census geographic area codes from the state level down to individual census
blocks (http://www.census.gov/geo/www/geodiagram.html). By linking
address records in the MAF to the TIGER® database, the Census Bureau is
able to identify street segments along which an individual address exists and
determine the geographic code that applies to that address.
The Census Bureau’s Geography Division regularly updates the MAF/TIGER
database from various sources. In addition to the USPS DSF, other sources of
updates include current household surveys, special censuses, and local sources.
LUCA Program Responsibilities
Census Bureau’s LUCA Program Responsibilities

The Census Bureau’s LUCA program responsibilities include:
•

Provide training to LUCA Program participants.

•

Provide the necessary materials to participants.

•

Provide technical assistance.

•

Process updates submitted by LUCA participants.

•

Conduct a 100% Address Canvassing (field check) operation. The
Census Bureau will visit each census block within your jurisdiction
during this operation to update our address list and validate your
LUCA submissions.

•

Provide feedback materials for your review.

•

Provide assistance to participants to resolve any address discrepancies.

A census tract is a small, relatively permanent statistical division of a county or statistically equivalent entity,
delineated for the purpose of presenting Census Bureau statistical data.
7
A census block is a geographic area bounded by visible features, such as streets, roads, streams, and railroad tracks,
and invisible features, such as the boundaries of governmental units and other legal entities. Census blocks are the
smallest area for which the Census Bureau collects and tabulates statistical information.
8
Address ranges are the lowest and highest address numbers used to identify structures along each side of a street
segment that has city-style addresses. Usually one side of the street has even address numbers and the other side has
odd address numbers.

Chapter 1: Introduction to the 2010 Decennial Census Local Update of Census
Addresses (LUCA) Program

•

Provide for a formal appeal of disputed addresses by an independent
Federal agency outside of the Census Bureau and the Department of
Commerce.

Participant’s LUCA Program Responsibilities

As a participant in the LUCA program, your responsibilities include:

•

Select your LUCA liaison and reviewers. (The Census Bureau
suggests that individuals in your jurisdiction involved in zoning
enforcement not work on this program since this may create a conflict
of interest.)

•

Sign and return the Registration Form.

•

All liaisons, reviewers, and anyone with access to Title 13 materials
must read, understand, and agree to abide by the Census Bureau’s
Confidentiality and Security Guidelines (See Appendix A for the terms
of the LUCA Program Confidentiality Agreement and Security
Guidelines).

•

All liaisons, reviewers, and anyone with access to Title 13 materials
must sign and return to the Census Bureau the Confidentiality
Agreement Form.

•

Complete and return the Self-Assessment Form.

•

Complete and return the Participation Option/Product Preference form.

•

Ensure that everyone working on the LUCA program understands the
procedures for participating in the program and Census Bureau
terminology and concepts.

•

Keep Census Bureau addresses, and maps showing structure points 9,
(housing units and group quarters locations) confidential and ensure
their use only for census purposes. (Although structure points are not
displayed on the LUCA materials during the LUCA review phase, they
will be provided for the Feedback phase of the program.)

•

Ensure the receipt of all required materials for the LUCA program
review.

•

Prepare a strategy to conduct the review of LUCA materials.

•

Within 120 calendar days of receiving your LUCA materials, complete
your address list review and return your updated materials to the
Census Bureau.

•

Review the Census Bureau’s detailed feedback materials.

•

Appeal address discrepancies to the LUCA Appeals Office.

A structure point is a coordinate location that represents the location of one or more housing units and/or group
quarters. Structure points are protected by Title 13. See Appendix A, Confidentiality and Security Guidelines.

Chapter 1: Introduction to the 2010 Decennial Census Local Update of Census
Addresses (LUCA) Program

•

After the appeals process is complete, return to the Census Bureau or
destroy all Title 13 materials.

•

The LUCA liaison must verify the return or destruction of Title 13
materials by signing and returning to the Census Bureau the Return or
Destruction of Title 13, U.S.C. Materials form.

•

All LUCA program reviewers must sign and date the Return or
Destruction of Title 13, U.S.C. Materials form.

Training and Technical Support

Census Bureau staff will conduct LUCA training workshops beginning in
August of 2007. These training workshops will provide you with hands-on
experience in using the 2010 Decennial Census LUCA Program materials.
Should you need additional information, please contact your Census
Bureau Regional Office at 1-866-511-LUCA or for technical assistance,
please call the Help Desk at 866-919-5822.
Schedule

January – February 2007

LUCA advance notification letters and
information materials were mailed to highest
elected officials and other contacts in eligible,
active, functioning governments.

March – June 2007

LUCA Promotional Workshops were
conducted.

August 2007

LUCA invitation letters and registration
materials were mailed to the highest elected
officials and as a cc to other contacts in eligible,
active, functioning governments.

.
August 2007- January 2008

Invited governments register for LUCA and the
Census Bureau ships LUCA review materials to
each participating government.

August 2007

LUCA Training Workshops begin.

September 2007 – March 2008

LUCA participants review and update the
address list and return their comments to their
Census Bureau’s Regional Office within 120
calendar days from the receipt of materials.

October 2007 – October 2008

Census Bureau reviews participant’s LUCA
submissions and updates the Master Address
File/TIGER® system.
5

Chapter 1: Introduction to the 2010 Decennial Census Local Update of Census
Addresses (LUCA) Program

November 2008 – June 2009

Census Bureau prepares for and conducts an
Address Canvassing Operation using GPS
equipped hand held computers.

August 2009 – October 2009

Census Bureau provides feedback materials to
participants showing how we processed each
participant’s LUCA submissions.

September 2009 – December 2009 Participants review feedback materials and have
the opportunity to appeal the results to the
LUCA Appeals Office.
September 2009 – January 2010

LUCA Appeals Office reviews and adjudicates
appeals.

CHAPTER 2
BEFORE YOU BEGIN YOUR REVIEW
Introduction
What is a Housing Unit?
What are Group Quarters?
Unacceptable Types of Housing Units and Group Quarters
Census Bureau Addresses
Census Tract
Census Block
What is Geocoding?
Strategies for Reviewing the Census Bureau’s Residential Address List
Local Address Sources

Introduction

Chapter 2 explains some of the terms and concepts used by the Census Bureau
and recommended strategies for your LUCA review. Refer to the Glossary or
visit the Census Bureau’s Web site at http://www.census.gov for additional
terms and definitions.
What is a Housing Unit?

A single-family house, townhouse, mobile home, trailer, apartment, group of
rooms, or a single room occupied as a separate living quarters or, if vacant,
intended for occupancy as a separate living quarters. A separate living
quarters is one in which one or more occupants (or intended occupants, if
vacant) live separate from any other individual(s) in the building and have
direct access to the living quarters without going through another living
quarters, such as from outside the building or through a common hall.
The following types of housing units are acceptable and should be included on
the Address List:
•
•
•
•

Houses, including townhouses, condominiums, and apartments.
Living quarters within an otherwise nonresidential structure such as an
apartment within a church, school, or business.
Mobile homes or trailers occupied as separate living quarters, or if
vacant, intended for occupancy as separate living quarters.
Any units under construction that will be habitable (closed to the
elements with final roof, windows, and doors) on Census Day, April 1,
2010.

Chapter 2: Before You Begin Your Review

What are Group Quarters?

A place where people live or stay, in a group living arrangement, that is
owned or managed by an entity or organization providing housing and/or
services for the residents. This is not a typical household-type living
arrangement. These services may include custodial or medical care as well
as other types of assistance, and residency is commonly restricted to those
receiving these services. People living in group quarters are usually not
related to each other.
The following types of group quarters are acceptable and should be included
on the Address List:
•
•
•
•
•
•
•
•
•
•

Correctional facilities.
Juvenile facilities.
Nursing homes.
Hospitals with long-term care facilities.
College or university dormitories, fraternities, sororities.
Dormitories for workers.
Religious group quarters.
Shelters.
Group homes.
Any group quarters under construction that will be habitable (closed to
the elements with final roof, windows, and doors) on Census Day,
April 1, 2010.

Note: Housing units and group quarters can exist within the same structure.
Unacceptable Types of Housing Units and Group Quarters

Exclude the following unacceptable types of housing units and group quarters
addresses from your address list:
•
•
•
•
•
•

Condemned or scheduled for demolition.
Being converted or remodeled for nonresidential purposes.
Used solely for nonresidential storage.
Used solely as offices or businesses in which no one is living.
Used solely for ceremonial purposes.
Any units under construction that will not be habitable (closed to the
elements with final roof, windows, and doors) on Census Day, April 1,
2010.

Chapter 2: Before You Begin Your Review

Census Bureau Addresses
Residential and Nonresidential Addresses

The Census Bureau divides all addresses in two use types, residential and
nonresidential. Residential addresses are addresses of housing units and/or
group quarters where one or more people could live. Nonresidential addresses
are addresses of a structure or unit within a structure that do not serve as a
residence, such as commercial establishments, schools, government offices,
and churches.
Some structures can contain both residential and nonresidential units, even
though they have a single address such as an apartment over a store or a home
with an office.
Address Formats
City-style Address Format

The Census Bureau refers to housing units and group quarters addresses
that have a house number and street name address, for example, 212 Elm
Street or 137 Clark Ct., Apt. 316, as city-style addresses. In some
instances, the house number may also include an alpha character such as
35A or W9254 or include a designator such as “garage” or “rear”. These
addresses are used for mailing or to provide location for emergency
services, such as police, fire, and rescue (E-911 addresses).
City-style addresses for housing units in multi-unit structures, such as
apartment buildings, contain a unit designator, for example, Apt 101 or
Suite D (See Appendix D, Unit Designation Abbreviations). The Census
Bureau and the U.S. Postal Service treat these designators as part of the
housing unit address, and they are included in each affected census
address record.
Noncity-Style Address Format

The Census Bureau classifies addresses that do not include a house
number and/or a street name as noncity-style addresses. Noncity-style
addresses also may not include a complete house number and street name
address. The majority of noncity-style addresses are located in the more
sparsely settled areas of the United States; however, they may exist in
small or medium sized towns as well. Frequently used noncity-style
mailing addresses include:
•
•
•
•

General delivery.
Rural route and box number.
Highway contract route and box number.
Post Office box only delivery.
9

Chapter 2: Before You Begin Your Review

Noncity-style addresses often do not follow any numeric sequence, and
may not be associated with the name of the street or highway on which
they are located. For this reason, the Census Bureau uses different
methods to compile the list of addresses for inclusion into the Address
List, such as location descriptions (BRICK HSE w/ATTACHED
GARAGE ON RIGHT), structure points (geographic coordinates), and
census geographic codes (state code, county code, census tract number,
census block number).
Census Tract

Census tracts are small, relatively permanent statistical subdivisions of a
county or statistically equivalent entity, delineated for presenting Census
Bureau statistical data.
The proposed criteria for Census tracts for the 2010 Census is that they
contain a minimum of 1,200 people with an optimal population of 4,000.
Census tract boundaries are delineated with the intention of being stable over
many decades, so they generally follow relatively permanent visible features.
However, they may follow governmental unit boundaries and other nonvisible features in some instances. Census tract boundaries never cross state
or county (or statistically equivalent entity) boundaries.
Each census tract is uniquely numbered within a county and contains
numerous census blocks. Census tract numbers contain up to a 4-digit
number followed by a decimal point and a 2-digit number for suffixed tracts,
e.g., 1234.01. For census tracts without a suffix, the number will contain a
period with zero fill, e.g., 4567.00. Leading zeros are not shown on Census
Bureau maps.
Census Block

A Census block is an area bounded by visible features such as streets, roads,
streams, and railroad tracks and non-visible features such as the boundaries of
governmental units and other legal entities. A block is the smallest
geographic area for which the Census Bureau collects and tabulates statistical
data.
Census blocks may look like a city block or may be large and irregularly
shaped, depending upon features. The boundary of a state or a county is
always a block boundary.
Census blocks are numbered within census tracts and are unique to the census
tract to which they belong. Census block numbers contain a 4-digit number
plus a 1-digit alpha character, if applicable, e.g. 3001A. Suffixes, such as
2011A and 2011B, reflect boundary changes as well as added features.

Chapter 2: Before You Begin Your Review

Note: The 2010 Decennial Census LUCA Program addresses are coded to
current census block/geography.
What is Geocoding?

In order to process your address submissions, the Census Bureau requires the
inclusion of census geographic code information. This link to census
geography is referred to as geocoding. Geocoding places an individual
address in its correct geographic location, which includes the correct state,
county, census tract, and census block codes.
Because the Census Bureau counts people where they live, census geographic
code information or geocodes support the systematic collection of data that
allows Census enumerators to locate an address. They are also important in
allocating data from questionnaire responses to the correct location. You
must include census geographic code information for the Census Bureau to
process your address submissions. The Census Bureau will not accept
addresses without census geographic codes (geocodes) including the state,
county, census tract, and census block codes.
You can find these census geographic codes on your LUCA materials.
Strategies for Reviewing the Census Bureau’s Address List

You must decide for yourself how to conduct the LUCA Program review.
Consider your available time, the information you have readily available, and
the staff and computer resources you have. If resources are limited, the
Census Bureau recommends focusing on areas where addresses are more
likely to be missed or incorrect. For example:
•
•
•
•
•
•
•
•

Areas of new housing construction.
E-911 address conversion areas.
Areas that have changed from single-family homes to multi-family
homes and vice versa.
Warehouses that have been converted to residential lofts.
New mobile home parks or new scattered mobile homes.
Apartment buildings with irregular or missing numbering schemes for
the individual units.
Recently added territory.
Addresses near jurisdictional boundaries.

Local Address Sources

There are many possible sources of local address information. Some of these
sources may not match the Census Bureau’s Address List exactly, but they are
a good indication of where change is taking place and can help you identify
11

Chapter 2: Before You Begin Your Review

addresses that you need to add to the Address List. The following list
provides suggestions for local address source materials:
•

•
•
•
•
•
•
•
•

New housing construction or building permits include units that are
under construction only if final roof, doors, and windows will be in
place on Census Day, April 1, 2010.
E-911 address files.
Housing occupancy permits.
Planning or zoning records.
Local utility records.
Drivers’ license files.
Annexation records.
Assessment or taxation files.
Voter registration files.

CHAPTER 3
THE LUCA PROGRAM’S COMPUTER- READABLE ADDRESS LIST AND ADDRESS
COUNT LIST
Introduction
Protecting Census Bureau Address Information
The File Names
Software Requirements
Opening the Files
The File Formats

Introduction

The Census Bureau’s Address List and Address Count List files for your
jurisdiction are included on your CD-ROM. This chapter discusses how you
must protect the Census Bureau’s computer-readable address information and
explains the:
•
•
•

File names and formats.
Software requirements.
How to open the files.

Protecting Census Bureau Address Information

The most efficient method to review and match your local address list to the
Census Bureau’s Address List is to copy the address file onto a computer hard
drive or a network server in a useable format. You must first ensure the
protection of the Census Bureau’s Title 13 address information including your
Census Bureau computer-readable address file, all address list paper copies,
and maps (including copies) containing structure points. (Structure points will
be displayed on the address list and maps, where applicable, for the Feedback
phase of the program.) For detailed information see Appendix A,
Confidentiality and Security Guidelines.
The LUCA liaison must restrict access to confidential Census address
information to only those individuals who have signed the Confidentiality
Agreement. This includes all reviewers and anyone with access to LUCA
materials (See Appendix A for the terms of the Confidentiality and Security
Guidelines).
Operating systems, programs, applications, and data related to the review of
Census Bureau addresses must be accessible only to LUCA program liaisons
and reviewers. The automated data processing (ADP) system should restrict
the read, write, delete, and execute functions applicable to the Census
Bureau’s addresses.

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

The ADP system must use log-on routines that require a user-ID and password
that conform to the following guidelines:
•

Assign a unique user-ID and password for each LUCA Program
liaison and reviewer.

•

Passwords must consist of at least eight (8) nonblank characters
consisting of at least one alphabet letter and either one number or one
special character ($,*, &). No more than six consecutive characters
(AAAAAA) may appear in the password, and then only once.

•

Reject passwords that are the same as the user-ID or used within the
last 6 months.

•

Encrypt passwords.

•

Disable passwords after three bad attempts.

•

Do not display passwords on terminals or printers.

•

Change passwords every 90 days (more frequent change is optional)
or immediately, if compromised.

•

On new accounts, change the assigned password to a unique
password the first time users log on.

The ADP system must display a warning log-on feature. Computer screens
must display a warning that states:
**WARNING*WARNING*WARNING**
YOU HAVE ACCESSED A COMPUTER SYSTEM CONTAINING
UNITED STATES GOVERNMENT INFORMATION. USE OF THIS
COMPUTER WITHOUT AUTHORIZATION OR FOR PURPOSES
FOR WHICH AUTHORIZATION HAS NOT BEEN EXTENDED IS A
VIOLATION OF FEDERAL LAW AND CAN BE PUNISHED BY
FINE OR IMPRISONMENT (Public Law 99-474). ALL USE MAY BE
INTERCEPTED, MONITORED, RECORDED, COPIED, AUDITED,
INSPECTED AND DISCLOSED TO AUTHORIZED LAW
ENFORCEMENT OFFICIALS. REPORT SUSPECTED
VIOLATIONS TO YOUR AGENCY SECURITY OFFICER. USE OF
THIS SYSTEM INDICATES YOU CONSENT TO THIS WARNING.
LOG OFF IMMEDIATELY IF YOU DO NOT AGREE TO THE
CONDITIONS OF THIS WARNING.
**WARNING*WARNING*WARNING**
•

If you place Census Bureau address information on a shared computer
system, construct electronic security profiles to allow only the
LUCA liaison and reviewers access to the Census Bureau’s address
information. Test your security to ensure that only the LUCA liaison
and reviewers are permitted access to the Census Bureau’s address
information.

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

•

Lock all rooms containing computers and all associated media during
non-work hours.

•

Do not leave computers with Census Bureau address information
unattended during work hours. Log-off the computer or lock the room
whenever you leave.

•

Label any computer diskettes, CD-ROMs, DVDs, tapes, cartridges or
other computer storage media containing Census Bureau address
information with the following:

“This document contains information the release of which is prohibited
by Title 13 U.S.C. and is for Bureau of the Census official use only.”
•

If backup is necessary, do not send the tapes, cartridges, or disks offsite. Store them in a secured area. Do not mix, store, or back-up
LUCA data with other data.

•

Clear magnetic media (tapes, disks, hard drives) containing Census
Bureau address information before reuse. To clear magnetic media,
overwrite all Title 13 data three times at a minimum using a
commercial disk utility program or degauss using a commercial
degausser.

•

Program any software you develop for displaying the Census Bureau
addresses to label each affected page of a printout containing Census
Bureau address information with the following:

“This document contains information, the release of which is prohibited
by Title 13 U.S.C. and is for Bureau of the Census official use only.”
The File Names

The Address List (AL) file contains all of the residential addresses currently
recorded by the Census Bureau for your jurisdiction. The Address Count
List (ACL) file contains the residential address counts for each census block
within your jurisdiction. The name of each of the files is:
1. Address List – LUCA_AL_XXyyyyyyyyyy.txt
2. Address Count List – LUCA_ACL_XXyyyyyyyyyy.txt

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

Where:
XX = 2 character, alpha entity type:
ST – state
CO – county
PL – place
MC – minor civil division (MCD)
yyyyyyyyyy = variable length, numeric entity ID code.
The numeric portion of the entity identification code is of variable length,
depending on the type of entity:
•
•
•
•

State:
County:
Place:
Minor Civil Division (MCD):

2 digits
5 digits
7 digits
10 digits

Figure 3.1: Entity Identification Codes
Entity

Entity Identification Code

State
County
Place
Minor Civil Division
(MCD)

ST (2 alpha) + (2 numeric)
CO (2 alpha) + State (2 numeric) + County (3 numeric)
PL (2 alpha) + State (2 numeric) + FIPS Place (5 numeric)
MC(2 alpha) + State (2 numeric) + County (3 numeric) +
FIPS MCD (5 numeric)

Total
Characters
4
7
9
12

Examples:
Address List File Names
4-character state file name – New York:
LUCA_AL_ST36.txt, where “ST” is state and “36” is the state
code for New York.
7-character county file name – Erie County, New York:
LUCA_AL_CO36029.txt, where “CO” is county, “36” is the state
code for New York and “029” is the county code for Erie County.

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

9-character place file name – Lake Zurich, Illinois:
LUCA_AL_PL1731155.txt, where “PL” is place, “17”, the state
code for Illinois, and “31155” is the FIPS place code for Lake
Zurich.
12-character minor civil division – My Township, Indiana County,
Pennsylvania:
LUCA_AL_MC4206398555.txt, where “MC” is minor civil
division, in this instance, a township; “42” is the state code for
Pennsylvania; “063” is the county code for Indiana County; and
“98555”, the minor civil division code for My Township.
Address Count List File Names
9-character place – Mitchell, Wyoming:
LUCA_ACL_PL5645788.txt, where “PL” is place, “56” is the
state code for Wyoming, and “45788” is the Census place code for
Mitchell.
Software Requirements

The files you receive are pipe-delimited ASCII text files, meaning they can be
viewed and read as letters and numbers with a text editor. All spreadsheet and
database programs can read and understand these text files.
Many commercial spreadsheet and database programs can open the LUCA
files. Use spreadsheet programs such as Microsoft Excel or Lotus 123 to
open, view, and edit small files. For larger files, use a database program such
as Corel Paradox, QuattroPro, Microsoft Access, or dBase 10.
Note: Some computer programs that can open and view pipe-delimited text
files cannot save an edited file in the correct format. Make sure your program
has the ability to save or export a file with pipe-delimited fields. Call the Help
Desk at 866-919-5822 if you need assistance or more information.
Opening the Files

Refer to the readme file for instructions on opening the encrypted selfextracting Address List. A case sensitive password is required to open the
file. The Census Bureau will mail the password to you, separate from your
LUCA materials.

The Census Bureau does not endorse or recommend the use of any specific software to view its files. The program
names included here are only examples of programs that are able to read computer-readable files.

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

•

The Census Bureau recommends that you make a copy of each of the
files and place them on the hard drive of a computer that is password
protected. This will preserve the original files should you need to look
at an original record or require another original copy of the file.

•

To help keep your work organized, create a new directory or new
folder on your hard drive. Copy the files from the CD-ROM into that
directory or folder.

•

When you open the text files with your application, some spreadsheets
and databases will prompt you to supply some information about the
file. Be prepared to tell the application program the following:
c
c
c
c

Fields are delimited.
Delimiter is a pipe symbol ( | )
Text qualifier is none.
All field types are text.

•

It is critical that you define all field types as “text” including numeric
fields such as census tract number, census block number, ZIP Code,
and so forth.

•

Follow the record layout in Figure 3.2 to name and define the sizes of
your fields.

•

If you need assistance or more information, call the Help Desk at 866919-5822.

The File Formats
Address List

The Census Bureau’s Address List contains all of the residential (city-style
and noncity-style) addresses known to the Census Bureau within your
jurisdiction. It also contains census geographic codes (state, county,
census tract, census block) that indicate the location of each address.
Each address record in the Address List file is a maximum of 462
characters and contains 26 fields of information. The character length of
each record may vary.
Each address record contains the following fields:
1. Entity ID Code – unique identification number assigned by the

Census Bureau to each entity. Do not edit the Entity ID Code for
existing address records, but record the Entity ID Code for address
records that you add.

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

2. Line Number – sequential number for each address record in the

file. Do not edit this field.
3. MAFID – unique control number assigned to each MAF address.

Do not edit this field.
4. Action Code – edit this field to record the type of change when an
update is made to the address list, including:

Address adds.
Address corrections.
Address deletes.
Not in jurisdiction addresses.
Nonresidential addresses.

5. State Code – 2-digit current state code state for your jurisdiction.
You may edit this field to record your correct state code.
6. County Code – 3-digit current county code for your jurisdiction.
You may edit this field to record your correct county code.
7. Census Tract Number – uniquely identifies the census tracts
within your county or statistically equivalent entity. Census tract
numbers contain up to a 4-digit number followed by a decimal
point and a 2-digit number for suffixed tracts, e.g., 1234.01. For
census tracts without a suffix, the number will contain a period
with zero fill, e.g., 4567.00. You may edit this field to record
correct census tract numbers.
8. Census Block Number – identifies uniquely numbered census
blocks within each census tract. Census block numbers contain a
4-digit number plus a 1-digit alpha character, if applicable, e.g.
3001A. You may edit this field to record correct census block
numbers.
9. Group Quarters Flag – displays a “Y” for addresses that are
considered group quarters, such as nursing homes or dormitories.
You may edit this field for group quarters addresses.
10. House Number – housing unit or group quarters assigned house
number, which can contain number, letters, hyphens, or other
characters. You may edit this field to record correct house
numbers.
11. Street Name Prefix Qualifier – examples include, EXT, ALT,
BUS, OLD, such as ALT Rt. 30 or OLD Warren Rd. You may
edit this field.
12. Street Name Prefix Direction – examples include, N, W, SE,
such as N Elm St. or SE Chestnut Dr. You may edit this field.
13. Street Prefix Type – examples include, HWY, RT, US, such as
HWY 154 or RT 222. You may edit this field.

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

14. Street Name – full street or road name such as Apple Blossom or
9th ST. You may edit this field to record correct street names.
15. Street Name Suffix Type – examples include, ST, CT AVE, DR,
such as Marley St. or Winterberry Dr. You may edit this field.
16. Street Name Suffix Direction – examples include, N, W, SE such
as Waverly Dr. S. You may edit this field.
17. Street Name Street Qualifier – examples include, EXT, ALT,
BUS, such as 6th St. EXT. You may edit this field.
18. Location Description or GQ – description of a living quarter
(e.g., Red Ranch w/White Shutters) or name of group quarters (e.g.
Dobbs Hall). If the value in the Group Quarters Flag field is “Y”,
you may edit or enter the GQ Name in the Location
Description/GQ Name field. If the value in the Group Quarters
Flag field is blank, do not edit or add values in the Location
Description/GQ Name field.
19. Apartment/Unit Number – within structure descriptor or
identifier. This column may contain apartment unit numbers such
as APT 5 or location such as 1st FL FRNT. You may edit this field
to record apartment or unit numbers.
20. City-Style Mailing ZIP Code – 5-digit ZIP Code for city-style
mailing addresses. You may edit this field.
21. Noncity-Style Mail Delivery Address (RR#, HCR#, or PO
BOX#) – identifies noncity-style mail deliver address such as rural
route and box number, post office box number, etc. Do not edit
this field.
22. Noncity-Style Mailing ZIP Code – 5-digit ZIP Code for noncitystyle mailing addresses. Do not edit this field.
23. Structure Point – 4-digit number plus 1-digit alpha character
number assigned by the Census Bureau to a structure that contains
a housing unit or a group quarters address. This field will be blank
for the review phase of the LUCA program but will be provided
for the Feedback phase of the program. Do not edit this field.
24. Structure Latitude – structure latitude. Do not edit this field.
25. Structure Longitude – structure longitude. Do not edit this field.
26. City-Style Address Flag – records with a City-Style Address
Flag value of “Y” can be updated. Records with a City-Style
Address Flag value of “N” cannot be updated. Do not edit this
field. (The Census Bureau will not process updates to address
records containing an “N” in the City-Style Address Flag column.)

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

Example – Computer-Readable Address List File Record Layout
Figure 3.2: Computer-Readable Address List File Record Layout
Maximum
Character
Length

12
7
9
1
2
3
7
5
1
35
3
2
14
100
14
2
3
100
53
5
50
5
5
11
12
1

Field Name

Description/Notes

Unique identification number assigned by the Census
Bureau to each entity
Line Number
Sequential number for each address record in the file
MAFID
Unique control number assigned to each MAF address
Action Code
Valid codes: A, C, D, J, N, entered by participant
State Code
2-digit Current State Code
County Code
3-digit Current County Code
Up to 4-digit Census Tract Number, plus 2-digit number
Census Tract Number
suffix, if applicable, includes a period for suffixed tracts. If
no suffix, includes period and zero fill
4-digit Current Census Block Number, plus 1-digit alpha
Census Block Number
character suffix, if applicable
Group Quarters Flag
Displays a ‘Y’ if the unit is a group quarters
House Number
Housing unit’s or group quarter’s assigned house number
Street Name Prefix Qualifier e.g., EXT, ALT, BUS, OLD
Street Name Prefix Direction e.g., N, W, SE
Street Name Prefix Type
e.g., HWY, RT, US
Street Name
Full street or road name
Street Name Suffix Type
e.g., ST, CT, AVE, DR
Street Name Suffix Direction e.g., N,W, SE
Street Name Street Qualifier e.g. EXT, ALT, BUS
Location Description or GQ
Description of living quarter (Red Ranch w/White Shutters)
Name
or name of group quarter (Dobbs Hall-University of Dobbs)
Within structure descriptor or identifier, such as APT 5 or 1st
Apartment/Unit Number
FL FRNT
City-Style Mailing ZIP Code 5-digit ZIP Code for city-style mailing addresses
Noncity-Style Mail Delivery
Address (RR#, HCR#, or PO Rural route and box number, post office box number, etc.
BOX#)
Noncity-Style Mailing ZIP
5-digit ZIP Code for noncity-style mailing address
Code
4-digit number plus 1-digit alpha assigned by the Census
Structure Point
Bureau to structures (RR, PO Box #, General Delivery, etc.)
Structure Latitude
Structure Latitude
Structure Longitude
Structure Longitude
Displays “Y” if city-style address, an “N” if noncity-style
City-Style Address Flag
address
Entity ID Code

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

Example – Pipe-delimited Address List File – City-style Address

The following is an example of how the information may appear in the
Address List file before importing the file using your software program.
The example is a city-style address, 101 Main Street, Mytown, PA 15888.
Note that the “Y” in field 26 indicates that this is a city-style address and
that the address record can be updated.
PL4291059|107|123456789| |42|134|7654.01|2345| |101| | | |MAIN|ST| | | | |15888| | | | | |Y
Figure 3.3 displays the data in the appropriate fields.
Figure 3.3: Pipe-delimited LUCA Program Address List File – City-style Address
Field
Number

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

Field Name

Entity ID Code
Line Number
MAFID
Action Code
State Code
County Code
Census Tract Number
Census Block Number
Group Quarters Flag
House Number
Street Name Prefix Qualifier
Street Name Prefix Direction
Street Name Prefix Type
Street Name
Street Name Suffix Type
Street Name Suffix Direction
Street Name Street Qualifier
Location Description or GQ Name
Apartment/Unit Number
City-Style Mailing ZIP Code
Noncity-Style Mail Delivery Address (RR#,
HCR#, or PO BOX#)
Noncity-Style Mailing ZIP Code
Structure Point
Structure Latitude
Structure Longitude
City-Style Address Flag

Example

PL4291059
107
123456789
Blank
42
134
7654.01
2345
Blank
101
Blank
Blank
Blank
MAIN
ST
Blank
Blank
Blank
Blank
15888
Blank
Blank
Blank
Blank
Blank
Y

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

Example – Pipe-delimited Address List File – Noncity-style Address

The following is an example of how the information may appear in the
Address List file for a noncity-style address: Box 223, Scott Level Road,
Myhome, Ohio 45555. Note that the information includes a description in
the location description field:
2-STORY BRICK W/ATTACHED GARAGE ON LEFT
Also note that the “N” in field 26 indicates that this is a noncity-style
address and that the address record cannot be updated.
PL3942868|678|234567891| |39|074|2345.00|5432| | | | | |SCOTT LEVEL|ROAD| | | 2STORY BRICK W/ATTACHED GARAGE ON LEFT| | |BOX 223|45555| | | |N
Figure 3.4 displays the data in the appropriate fields.
Figure 3.4: Pipe-delimited LUCA Program Address List File – Noncity-style Address
Field
Number

Field Name

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

19
20
21

Apartment/Unit Number
City-Style Mailing ZIP Code
Noncity-Style Mail Delivery Address (RR#,
HCR#, or PO BOX#
Noncity-Style Mailing ZIP Code
Structure Point
Structure Latitude
Structure Longitude
City-Style Address Flag

22
23
24
25
26

Example

PL3942868
678
234567891
Blank
39
074
2345.00
5432
Blank
Blank
Blank
Blank
Blank
SCOTT LEVEL
ROAD
Blank
Blank
2-STORY BRICK W/ATTACHED
GARAGE ON LEFT
Blank
Blank
BOX 223
45555
Blank
Blank
Blank
N

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

Address Count List

The Address Count List contains the number of housing unit and
group quarters addresses on the Address List for each census block
within your jurisdiction. Use the Address Count List to identify
inconsistencies between the Census Bureau’s housing unit and/or
group quarters address counts and your jurisdiction’s housing unit
and/or group quarters address counts.
Each block record in the Address Count List file is a maximum of 57
characters and contains nine (9) fields of information. The character
length of each record may vary. See Figure 3.5 for the Address Count
List file record layout.
1. Entity ID Code – unique identification number assigned by the
Census Bureau to each entity. This field is pre-populated and
cannot be edited.
2. State Code – 2-digit current state code state for your jurisdiction.
This field is pre-populated and cannot be edited.
3. County Code – 3-digit current county code for your jurisdiction.
This field is pre-populated and cannot be edited.
4. Census Tract Number – uniquely identifies the census tracts
within your county or statistically equivalent entity. Contains up
to a 4-digit number followed by a decimal point and a 2-digit
number for suffixed tracts, e.g., 1234.01. For census tracts without
a suffix, the number will contain a period with zero fill, e.g.,
4567.00. This field is pre-populated and cannot be edited.
5. Census Block Number – identifies uniquely numbered census
blocks within each census tract. Contains a 4-digit number plus a
1-digit alpha character, if applicable, e.g. 3001a. This field is prepopulated and cannot be edited.
6. Census Count of Housing Unit Addresses – Census Bureau’s
most recent count of housing unit addresses. This field is prepopulated and cannot be edited.
7. Local Count of Housing Unit Addresses – this field is blank to
record your local count of housing unit addresses if there is a
discrepancy between the Census Bureau’s count of housing unit
addresses and your local count of housing unit addresses.
8. Census Count of Group Quarters Addresses – Census Bureau’s
most recent count of group quarters addresses. This field is prepopulated and cannot be edited.
9. Local Count of Group Quarters Addresses – this field is blank
to record your local count of group quarters addresses, if there is a

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

discrepancy between the Census Bureau’s count of group quarters
addresses and your local count of group of quarters addresses.
Example – Address Count List File Record Layout
Figure 3.5: Address Count List File Record Layout
Maximum
Character
Length

Field Name

Entity ID Code

2
3

State Code
County Code

Census Tract and Suffix

Census Block and Suffix

7
7
7
7

Census Count of Housing
Unit Addresses
Local Count of Housing
Unit Addresses
Census Count of Group
Quarters Addresses
Local Count of Group
Quarters Addresses

Description/Notes

Unique identification number assigned by the Census Bureau to
each entity
2-digit State Code
3-digit County Code
Up to 4-digit Census Tract Number, plus 2-digit number suffix,
if applicable, includes a period for suffixed tracts. If no suffix,
includes period and zero fill
4-digit Current Census Block Number, plus 1-digit alpha
character suffix, if applicable
Census Bureau’s most recent count of housing unit addresses
Blank field to record your most recent count of housing unit
addresses
Census Bureau’s most recent count of group quarters addresses
Blank field to record your most recent count of group quarters
addresses

The last row records the total number of Census Blocks, Census
Bureau Housing Unit Addresses, and Census Bureau Group Quarters
Addresses on the Address Count List. You do not need to record your
totals. See Figure 3.6 for the “Total Row” Layout.
Figure 3.6: Address Count List File “Total Row” Layout
Maximum
Character
Length

Field Name

Description/Notes

Census Tract and Suffix

The word “Total” appears in this column

Census Block and Suffix
Census Count of Housing
Unit Addresses
Local Count of Housing
Unit Addresses
Census Count of Group
Quarters Addresses
Local Count of Group
Quarters Addresses

Total number of Census Blocks on the Address Count List
Total number of Census Bureau Housing Unit Addresses on the
Address Count List

7
7
7
7

Blank. You do not need to record your totals.
Total number of Census Bureau Group Quarters Addresses on
the Address Count List

Blank. You do not need to record your totals.

Chapter 3: The LUCA Program’s Computer-Readable Address List and Address
Count List

Example – Pipe-delimited Address Count List File

Figure 3.7 is an example of how the information may appear in the
Address Count List file before importing the file using your software
program. This example is for a place, entity ID code PL1622233, in the
state of Idaho, state code 16, place code 22233, and county code 089.
There are 765 housing unit addresses and three (3) group quarters
addresses in Census Tract 6789.01, Census Block 5432.
PL1622233|16|089|6789.01|5432|765| |3|
Figure 3.7: Pipe-delimited Address Count List File

Address
Count
Record

Field Name

PL1622233
16
089
6789.01
5432
765
Blank
3
Blank

Entity ID Code
State Code
County Code
Census Tract and Suffix
Census Block and Suffix
Census Count of Housing Unit Addresses
Local Count of Housing Unit Addresses
Census Count of Group Quarters Addresses
Local Count of Group Quarters Addresses

Chapter 4: Reviewing and Updating the Address List File

CHAPTER 4
REVIEWING AND UPDATING THE ADDRESS LIST FILE
Action Codes for Updating Address List File
A – Adding Addresses
C – Correcting Addresses
D – Deleting Addresses
J – Not in Jurisdiction Addresses
N – Nonresidential Addresses
Saving the File

Action Codes for Updating the Address List File

This chapter provides instructions on making updates to the computer-readable
Address List. (Please refer to Chapter 6 for instructions for updating
corresponding paper maps or feature shapefiles.)
There are five action codes you can use to make updates to the Address List:
A – Add
C – Correction
D – Delete
J – Not in Jurisdiction
N – Nonresidential
You can add or make updates to city-style addresses 11 only. You must include
the appropriate action code with each address record that you add or update. The
Census Bureau will only process those address records that contain an action
code.
Note: If you know the city-style address for a noncity-style address on the
address list, do not attempt to correct the address. Instead, add the correct citystyle address to the address list as described in the following section, A – Adding
Addresses.
A – Adding Addresses

Use the “A” Action Code to add only city-style addresses for your
jurisdiction not shown on the Census Bureau’s Address List.
Note: You must provide the correct census geographic codes (i.e., state
code, county code, census tract number, and census block number)

For census blocks containing all noncity-style addresses, you can only challenge the count of addresses for census
blocks. For census blocks containing a mix of city-style and noncity-style addresses, you can only update the
individual city-style address(es) or challenge the count of addresses for the entire census block; you cannot do both.
See Chapter 5.

Chapter 4: Reviewing and Updating the Address List File

when adding an address record. The Census Bureau will not accept
addresses without census geographic codes.
1. Create a new record or start/insert a new row.
2. Enter an “A” in the “Action Code” field.
3. Enter the required address information in the appropriate fields for

each new address:
a.
b.
c.
d.
e.
f.

g.
h.
i.
j.
k.
l.
m.
n.
o.

Entity code
State code
County code
Census tract number
Census block number
Group quarters flag (if applicable)
(i.) Enter a “Y” in the “Group Quarters Flag” field
for a group quarters address.
House number
Street name prefix qualifier
Street name prefix direction
Street name prefix type
Street name
Street name suffix type
Street name suffix direction
Street name suffix qualifier
GQ name (if applicable)
(i.) Add the name of the group quarters in the
“Location Description or GQ Name” field.

p. Apartment/unit number (if applicable)
To add apartment/unit numbers or mobile homes whether
occupied or vacant, use the following procedure:
(i.) Create one record for each individual unit and add
each individual unit designator, if known.
(ii.)If the apartment/unit designators are unknown, but
you know the number of units at the multi-unit
structure, enter “*#”in the “Apartment/Unit
Number” field for each unit added.
The “*” character will alert the Census Bureau that
the actual unit identifiers are unknown and that we
need to obtain further information during our field

Chapter 4: Reviewing and Updating the Address List File

check of the address. The “#” is the sequential
number, i.e., 1,2,3,4, etc.
For example, the new multi-unit structure located
505 Wells Blvd, contains 20 units. You don’t know
the actual individual unit numbers or designators
but you know there are 20 units:
(1.) Create 20 records with the correct census
geographic codes (i.e., state code, county
code, census tract number, census block
number) and the street address, 505 Wells
Blvd.
(2.) For each unit added at 505 Wells Blvd, enter
in sequence, the appropriate “*#” in the
“Apartment/Unit Number” field.
For example, for the first unit added at 505
Wells Blvd, enter “*1” in the
“Apartment/Unit Number” field; for the
second unit record added, enter “*2” in the
“Apartment/Unit Number” field, and so
on, until you get to the twentieth unit record,
where you enter “*20” in the
“Apartment/Unit Number” field.
q. City-style mailing ZIP Code (if the address is a mailing
address)
If applicable, add new streets or other map features on the Census Bureau
map(s) as shown in Figure 6.3, Adding a New Street on the Paper Map, or
in the Shapefiles section of Chapter 6.
C – Correcting Addresses

Enter a “C” in the “Action Code” field for the following situations and
replace all incorrect census geographic codes (i.e., state code, county
code, census tract number, and census block number) and/or address
information with the correct information:
a. Incorrect state code
b. Incorrect county code
c. Incorrect census tract number
d. Incorrect census block number
e. Incorrect house number

Chapter 4: Reviewing and Updating the Address List File

Incorrect street name prefix qualifier

g. Incorrect street name prefix direction
h. Incorrect street name prefix type
i.

Incorrect street name

Incorrect street name suffix type

k. Incorrect street name suffix direction
l.

Incorrect street name street qualifier

m. Incorrect group quarters name
n. Incorrect apartment/unit number
o. Incorrect ZIP Code
Examples

The following scenarios provide examples for the most common
corrections to the Address List:
1. Correcting a Street Name
2. Correcting the Location of a Street and its Corresponding
Addresses
3. Correcting and Incorrect House Number or an Incorrect
Apartment/Unit Number
4. Conversion of a Housing Unit to a Multi-Unit Structure
5. Conversion of A Multi-Unit Structure to a Single Housing Unit
6. Conversion of a Group Quarter to a Housing Unit
7. Conversion of a Single Housing Unit to a Group Quarters
1. Correcting a Street Name

The Address List incorrectly shows Bryan St instead of Ryan St,
the correct street name.
a. Enter a “C” in the “Action Code” field.
b. In the “Street Name” field, delete Bryan St for all of the
affected addresses and enter Ryan St.
See Chapter 6, Correcting a Street Name on the Paper Map or the
Shapefile section.

Chapter 4: Reviewing and Updating the Address List File

2. Correcting the Location of a Street and its Corresponding
Addresses

The Address List shows 101 through 106 Winona St as located in
Census block 2005. According to local sources, Winona St is
located in Census block 1034.
a. Enter a “C” in the “Action Code” field.
b. In the “Census Block Number” field, delete the incorrect
census block number (2005) and enter 1034.
3. Correcting an Incorrect House Number or an Incorrect
Apartment/Unit Number

Incorrect House Number:
The Address List shows a house number as 102 Coolspring St.
The house number is actually 1002.
a. Enter a “C” in the “Action Code” field.
b. Delete 102 and enter 1002.
Incorrect Apartment/Unit Number:
The A, B, and C apartment numbers for 1004 Coolspring St are
incorrect. The apartment numbers are 1, 2, and 3.
a. Enter a “C” in the “Action Code” field.
b. Delete the A, B, and C in the “Apartment/Unit
Number” field and enter 1, 2, and 3.
4. Conversion of a Housing Unit to a Multi-Unit Structure

The single housing unit at 107 Pershing Ct is now a multi-unit
structure containing 10 apartments.
a. Make any corrections to the census geographic code
information, if necessary.
b. Copy the corrected original address record as many
times as needed for each additional unit, in this instance
nine (9) since the original address already exists on the
Address List. (When copying an address record, delete
the Line Number and MAFID before editing the
record.)
c. Enter a “C” in the “Action Code” field for the original
corrected address. Enter the first unit designator in the
“Apartment/Unit Number” field. In this instance,
number 1.

Chapter 4: Reviewing and Updating the Address List File

d. For each of the new nine (9) records at the original
address:
i. Enter an “A” in the “Action Code” field.
ii. Enter the unit designation in the
“Apartment/Unit Number” field, if known.
(1) If the apartment/unit numbers are unknown,
but you know the number of units at the
multi-unit structure, enter “*#” in the
“Apartment/Unit Number” field for each
unit added.
The “*” character will alert the Census
Bureau that the actual unit identifiers are
unknown and that we need to obtain further
information during our field check of the
address. The “#” is the sequential number,
i.e., 1,2,3,4, etc.
(2) For each unit added, enter in order, the
appropriate “*#” in the “Apartment/Unit
Number” field. For example, for the first
unit added, enter “*2” in the
“Apartment/Unit Number” field; for the
second unit record added, enter “*3” in the
“Apartment/Unit Number” field, and so
on, until you get to the tenth unit record,
where you enter “*10” in the
“Apartment/Unit Number” field.
5. Conversion of a Multi-Unit Structure to a Single Housing Unit

The multi-unit structure at 729 Butternut St has been converted
to a single housing unit.
a. Enter a “C” in the “Action Code” field for the first unit
address record.
b. Remove the unit designation in the “Apartment/Unit
Number” field.
c. For the remaining units, enter a “D” in the “Action
Code” field. See the next section, D – Deleting
Addresses.
6. Conversion of a Group Quarters to a Housing Unit

The group quarters at 341 Crown Ave, Fair Haven Home, has
been converted to a single housing unit.

Chapter 4: Reviewing and Updating the Address List File

a. Enter a “C” in the “Action Code” field.
b. Remove the “Y” in the “Group Quarters Flag” field.
c. Remove the name of the group quarters, Fair Haven
Home, in the “Location Description or GQ Name”
field.
7. Conversion of a Single Housing Unit to a Group Quarters

The single housing unit located at 349 Crown Ave has been
converted to a group quarters, the Greenhill Home.
a. Enter a “Y” in the “Group Quarters Flag” field.
b. Add the name of the group quarters in the “Location
Description or GQ Name” field.
Make corrections to the map(s) as needed so that the maps match the new
address information on the Address List as shown in Chapter 6.
D – Deleting Addresses

Enter a “D” in the “Action Code” field. Be very careful when using this
action code. Do not make corrections to any other fields.
Before deleting an address, ensure that the housing unit or group quarters
does not exist, is uninhabitable, or is a duplicate address. Duplicate
addresses are those that are incorrectly listed twice on the Census Address
List.
Note: Do not use the “D” action code for existing nonresidential
addresses; instead, use the “N” nonresidential action code.
Examples
1. Deleting Addresses that no Longer Exist

All of the housing units along Dunlap St have been demolished.
a. Enter a “D” in the “Action Code” field for all of the
addresses that have been demolished and no longer exist on
Dunlap St.
b. Do not make corrections to any other fields.
Make deletions to the map(s), as shown in Figure 6.6, Deleting
Streets on the Paper Map, or refer to the Shapefiles section in

Chapter 4: Reviewing and Updating the Address List File

Chapter 6, so that the maps match the new information on the
Address List.
2. Deleting Duplicate Addresses

The Address List lists 101 Main St and 101 S Main St. Your local
address sources indicate that there is a 101 S Main St but no101
Main St. After confirming that 101 Main St does not exit:
a. Enter a “D” in the “Action Code” field for 101 Main St.
b. Do not make corrections to any other fields.
J – Not in Jurisdiction Addresses

Enter a “J” in the “Action Code” field for addresses that are not in your
jurisdiction. Do not make corrections to any other fields.
Example

The housing unit at 107 Lilac Street is not in your jurisdiction.
a. Enter a “J” in the “Action Code” field.
b. Do not make corrections to any other fields.
N – Nonresidential Addresses

Enter an “N” in the “Action Code” field for addresses that are used for
any purpose other than residential such as a business, school, church,
school, government office, etc. Do not make corrections to any other
fields.
Before entering an “N” action code, ensure that the address does not
contain a living quarters; some structures can contain both residential
and nonresidential units, even though they have a single address such as
an apartment over a store or a home with an office.
Example

The housing unit at 925 Merry Way is now a business.
a. Enter a “J” in the “Action Code” field.
b. Do not make corrections to any other fields.
It is very important that you provide the correct census geographic
codes, (i.e., state code, county code, census tract number, census
block number) in the appropriate fields. Accurate information will

Chapter 4: Reviewing and Updating the Address List File

enable the Census Bureau to be successful in finding addresses during
our field verification operation.
Saving the File

Save the file frequently - - at least once every 10 minutes - - to avoid possible
loss of work. In addition to saving the file often, you should back up the file
each week. Do this in the event of hardware faults and/or software corruption.
This process ensures that, at most, a week’s worth of work is lost.
When you have finished updating the Address List file:
•

Save to a new file only those records that have an entry in the
“Action Code” field as a pipe-delimited, ASCII text file (If you need
further instruction on saving a pipe-delimited, ASCII text file, please
call the Help Desk at 866-919-5822.)

•

Name the file containing the address list XXyyyyyyyyyy_UAL.txt
(XXyyyyyyyyyy is your entity identification code).

•

Make a copy of your edited file to keep for your records and to use
during the Feedback phase of the program.
o All Address List copies are Title 13 address information. Keep all
copies in a secure location.

•

ZIP and password protect the file.
o If you do not have ZIP software, Freebyte ZIP software is provided
on your CD-ROM.
o Use the case sensitive password provided to you by the Census
Bureau to password protect the file.

•

Burn the file to a CD-ROM or DVD.

•

Send the CD-ROM or DVD with updates to your Census Bureau
Regional Office.* See the back cover for a list of Regional Offices.
o You may not submit an e-mail or post the file to an FTP site.

* See Chapter 7 for returning your Title 13 LUCA materials to the
Census Bureau.

CHAPTER 5
REVIEWING AND UPDATING THE ADDRESS COUNT LIST FILE
The Address Count List File
Census Bureau Maps
Reviewing and Editing the Address Count List File
Saving the File

The Address Count List File

The Address Count List file contains the count of housing unit and group
quarters addresses on the Address List for each census block within your
jurisdiction. Use this list to challenge the count of addresses for any census
block within your jurisdiction that you believe to be incorrect.
If a census block contains a mix of city-style and noncity-style addresses, you
can comment on the individual city-style addresses on the Address List or
challenge the count of addresses for the entire census block on the Address
Count List, but you cannot do both within the same block.
If your address list and the Census Bureau’s Address List contain only
noncity-style addresses for a census block, you can challenge the count of
addresses for that block only if a discrepancy exists.
Note: It is to your benefit and the Census Bureau’s that you provide citystyle address updates wherever applicable, rather than challenging the count
of addresses in a census block.
Census Bureau Maps

The Census Bureau provides you with one set of paper maps or a shapefile as
a reference for locating individual addresses. If you selected to receive paper
maps, The Map Sheet to Block Number Relationship List lists all of the
census blocks within your jurisdiction and identifies the map sheet(s) on
which each census block is located. If you selected shapefiles, the tabblock
shapefile contains the census block boundaries and block numbers for your
jurisdiction.
Reviewing and Editing the Address Count List File

Once you have successfully imported and opened the file (see Chapter 3,
Opening the Files), review the Census Bureau’s current housing unit address
count for each census block within your jurisdiction. If there is a discrepancy
between the Census Bureau’s current housing unit address count and your
local address count for any census block, record the correct count in the
“Local Housing Unit Address Count” column for that particular census
block. Record any discrepancy between the Census Bureau’s current address

Chapter 5: Reviewing and Updating the Address Count List

counts for group quarters and your local address counts for group quarters in
the “Local Group Quarters Address Count” column.
Example

The Census Bureau’s address count shows 765 housing unit addresses
and three (3) group quarters addresses in Census Tract 6789.01,
Census Block 5432. Your local address records indicate that there are
actually 783 housing unit addresses and four (4) group quarters
addresses in the census block.
To update the address count record:
•

Record the 783 housing unit addresses in the “Local Count of
Housing Unit Addresses” field.

•

Record the four (4) group quarters addresses in the “Local
Count of Group Quarters Addresses” field.

Figure 5.1: Adding Local Counts to the Address Count List

Entity ID
Code

State
Code

PL1622233 16

County
Code

Census
Tract
and
Suffix

Census
Block
and
Suffix

089

6789.01 5432

Census
Count of
Housing
Unit
Addresses

Local
Count of
Housing
Unit
Addresses

Census
Count of
Group
Quarters
Addresses

Local
Count of
Group
Quarters
Addresses

765

783

Saving the File

Save the file frequently - - at least every 10 minutes - - to avoid possible loss
of work. In addition to saving the file often, you should back up the file each
week. Do this in the event of hardware faults and/or software corruption.
This process ensures that, at most, only a week’s worth of work is lost.
When you have finished updating the Address Count List file:
•

Save to a new file only those records with an entry in the “Local
Housing Unit Address Count” field and/or the “Local Group
Quarters Address Count” field as a pipe-delimited, ASCII text file.
(If you need further instruction on saving a pipe-delimited, ASCII text
file, please call the Help Desk at 866-919-5822.)

•

Name the file containing the Address Count List
XXyyyyyyyyyy_UACL.txt (XXyyyyyyyyyy is your entity
identification code).

Chapter 5: Reviewing and Updating the Address Count List

•

Make a backup copy of your edited file to keep for your records and to
use during the Feedback phase of the program.

•

Burn the file to a CD-ROM or DVD.

•

Send the CD-ROM or DVD with updates to your regional office.*
o You may not submit an e-mail or post the file to an FTP site.

* See Chapter 7 for returning your LUCA materials to the Census
Bureau.

CHAPTER 6
THE CENSUS BUREAU MAPS
Introduction
Reading a Census Bureau Paper Map
The Map Sheet to Block Number Relationship List
Examples
Figure 6.3: Adding a New Street and Associated Address Ranges
Figure 6.4: Correcting a Street Name on a Paper Map
Figure 6.5: Correcting the Location of a Street on the Paper Map
Figure 6.6: Deleting Streets on the Paper Map
Boundary and Annexation Survey
Shapefiles
Submitting Shapefile Feature Information
Metadata
Digital File Submission

Introduction

The Census Bureau provides you with one set of paper maps or shapefiles as a
reference for locating and geocoding individual address, and for updating and
correcting your jurisdiction’s features and boundaries. If you requested paper
maps, you also receive a Map Sheet to Block Number Relationship List that
identifies the map sheet(s) on which each census block is located. See Figure
6.2, The Map Sheet to Block Number Relationship List.
During your review, you may find that the boundary for your jurisdiction does
not depict the correct current location. You may use your LUCA maps to
provide updates to your legal boundaries. If you register to participate in the
LUCA program before October 31, 2007, you will receive your 2008
Boundary and Annexation Survey (BAS) materials with your LUCA program
materials.
The BAS materials include the BAS User Guide for paper maps and a
Boundary and Annexation Survey form.
If you selected to receive shapefiles, a layer for legal boundaries is included
that you may edit. Refer to the Digital BAS Respondent Guide included on
the CD-ROM containing your shapefiles for instructions on making your
boundary edits.
Reading a Census Bureau Paper Map

There are three types of paper map sheets:
1. Index Sheets
2. Parent Sheets
3. Inset Sheets
39

Chapter 6: The Census Bureau Maps

Index Sheets – for reference (if more than one map sheet)
•
•
•
•
•

Cover the entire extent of your jurisdiction.
Divided into numbered grids.
Each numbered grid area corresponds to area covered by a
parent sheet.
Used with jurisdictions containing more than one parent sheet.
Index sheets are for reference; please do not make updates to
the index maps because the updates are harder to incorporate
into our database due to the smaller scale.

Parent Sheets – for map updates
•
•
•
•

Detailed view of a section of your jurisdiction.
Correspond to a grid and grid number on the Index sheet.
Shows detail for features and geographic areas.
Used for map updates.

Inset Sheets – for map updates
•
•
•
•

Shows the detail of congested areas on parent sheets.
Corresponds to a notation on a Parent sheet.
Shows detail for features and geographic areas.
Use these maps to make updates for congested areas only.

The Census Bureau paper map shows some of the same information found
on a typical road map, such as streets and roads, water features, and legal
boundaries. However, the Census Bureau map displays this information
using symbols unique to the Census Bureau.
The map displays the following information:
•
•
•
•
•
•
•
•
•

Streets
Census block numbers
Street names
Railroads
Census tract boundaries
Incorporated names and FIPS Entity Code
Water features
Census tract numbers
Census block boundaries

Refer to Figure 6.1 for an example of a Census Bureau map.
40

Chapter 6: The Census Bureau Maps

Figure 6.1: Example of a Census Bureau Paper Map

Census tract
boundaries
Street
Incorporated
names and
FIPS Entity
Code

Census
block
numbers

Water features

Street
names

Census tract
numbers

Railroads

Census block
boundaries

Information contained in the map border:
•
•
•
•
•
•
•

The key to adjacent areas, if your jurisdiction has multiple map
sheets
Signature box for the Boundary and Annexation Survey (BAS)
Official
Entity identification information
Bar Code
Scale
North arrow
MAF/TIGER Accuracy Improvement Project (MTAIP) credit for
counties that have undergone the MTAIP process:
o The MTAIP project acquired geographic information system
(GIS) files, aerial photography, and GPS data from various
sources nationwide to update the TIGER® database.

Chapter 6: The Census Bureau Maps

One of the primary goals of the project was to develop a highly
accurate geographic database of the United States. The Census
Bureau focused on improving the accuracy of street feature
coordinates to provide base information suitable for use with
GPS-equipped hand-held devices that would facilitate the
gathering of accurate location and census information for all
living quarters and workplaces.

The symbols on the map legend include:
•
•
•
•
•

Boundaries
Transportation
Other Features
Landmarks
Footnotes and Notes

See Appendix B for a detailed description of the map legend.
The Map Sheet to Block Number Relationship List

The Map Sheet to Block Number Relationship List is provided for use with
paper maps. The list identifies the map sheet or sheets on which each census
block is located and is sorted by census tract number and census block number
in ascending order as shown in Figure 6.2 on the next page.

Chapter 6: The Census Bureau Maps

Figure 6.2: The Map Sheet to Block Number Relationship List

2010 Census Local Update of Census Addresses Program
Map Sheet to Block Number Relationship List
ST/CO: 14/015
Listing for: DARLINGTON COUNTY
Census
Tract
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01
49.01

Current
Census
Block #
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
2025
2026
2027
2028
2029
2030
2031
2032
2033
3001
3002
3003

Map# (s)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Date:
Page:

CO14015
Census
Tract
49.01
49.01
49.01
49.01
49.02
49.02
49.02
49.02
49.02
49.02
49.02
49.02
49.02

Current
Census
Block #
3004
3005
3006
3007
2010B
2011
2012
2013
3024
3025
3037
3038
3039

Map# (s)
1
1
1
1
1
1
1
1,2
1,2
2
2
2
2

Census
Tract

07/29/2007
1 of 1

Current
Census
Block #

Map# (s)

Chapter 6: The Census Bureau Maps

Examples
Adding a new street and associated address ranges

During your review, you may find addresses missing from the
Address List that are on streets that are partially or entirely missing
from the maps.
For example, Spring Street is a new street with newly constructed
housing units in Census Tract 2623.00, Census Block 3001. The
address ranges for this street are 101 through 109 on the east side
of the street and 100 through 108 on the west side.
Figure 6.3: Adding a New Street on the Paper Map

1. Using a purple pencil, draw the location of the new street
on the map.
2. Print the street name, Spring St.
3. Print the address ranges for each side of the new street.
4. Print the address breaks 13 where Spring St intersects
Coolspring St (703-705) and Searight Ave (406-408).
5. Add the new addresses to the Address List to ensure that
street name matches between the Address List and the map.

Address ranges are the lowest and highest address numbers used to identify structures along each side of a street
segment that has city-style addresses. Usually one side of the street has even address numbers and the other side has
odd address numbers.
13
Address breaks are the city-style addresses on each side of a boundary or at an intersection of a street with another
street or feature.

Chapter 6: The Census Bureau Maps

Correcting a street name on the paper map

The Address List and map incorrectly shows Bryan St instead of
Ryan St, the correct street name. The map also does not list the
alternate name for the street, which is County Road 9 (Co Rd 9).
Figure 6.4: Correcting a Street Name on the Paper Map

1. Using a purple pencil, cross out the incorrect name Bryan
St, and print the correct name, Ryan St above it.
2. Use double hatch marks to show the extent of the name
change. In this instance, the entire street needs to be
corrected.
3. Print the alternate name (Co Rd 9) in parentheses.
4. Make corrections to the Address List, as needed, so that the
map matches the Address List.

Chapter 6: The Census Bureau Maps

Correcting the location of a street on the paper map

The Address List and map shows Winona St as located in Census
Block 2005. According to local sources, Winona St is located
north of Connellsville St in Census Block 1034.
At this location, Winona St includes an odd numbered address
range from 101 through 105 on the north and an even numbered
address range from 100 through 106 on the south.
Winona St intersects Lincoln St between address numbers 502 and
504.
Figure 6.5: Correcting the Location of a Street on the Paper Map

1. Using a purple pencil, cross out the incorrect location of
Winona St with a series of “Xs”.
2. Redraw Winona St in its correct Census Block, 1034, and
print the street name and address ranges along the moved
street.
3. Draw an arrow to the correct location of Winona St.
4. Print the address breaks where Winona St intersects
Lincoln St.
5. Make corrections to the Address List, as needed, so that the
map matches the Address List.

Chapter 6: The Census Bureau Maps

Deleting a street on the paper map

In this example, there are two streets and their associated addresses
to delete.
1. All of the housing units along a portion of Dunlap St
between Census Block 3003 and Census Block 3004 have
been demolished, and this section of the street no longer
exists.
2. All of the houses on Carlisle St between Census Blocks
3003, 3004, 3006, and 3007 have been demolished. The
entire street no longer exists.
Figure 6.6: Deleting Streets on the Paper Map

Deleting a section of
Dunlap St on the paper map:
1. Use a purple pencil to “X” out
the section that no longer exists.
2. Use double hatch marks to
define the extent of the deleted
segment when deleting only part
of the street.
3. Dunlap St still exists on the
north side of
Pershing Ct.
Deleting Carlisle St on the paper
map:
4. To delete Carlisle St, “X” out
the entire street and put a purple
line through the name.

Boundary and Annexation Survey (BAS) Paper Maps

The Census Bureau conducts the Boundary and Annexation Survey (BAS)
each year to determine the inventory of correct names, legal descriptions, and
legal boundaries of counties and equivalent entities, minor civil divisions,
incorporated places, federally recognized American Indian reservations, and
off-reservation trust lands. Title 13, U.S.C. authorizes this voluntary survey.
Specifically, the Census Bureau requests up-to-date boundary information for
47

Chapter 6: The Census Bureau Maps

local governments and information on the legal actions associated with the
changed boundaries. The Census Bureau enters all boundary and area
information obtained through the BAS into the TIGER® database so that all
subsequent map and Census address list products reflect these changes.
During your review, you may find that the boundary for your jurisdiction does
not depict the correct current location. You may use your LUCA maps to
provide updates to your legal boundaries. If you register to participate in the
LUCA program before October 31, 2007, you will receive your 2008 BAS
materials with your LUCA program materials.
The BAS materials include the BAS User Guide for paper maps and a
Boundary and Annexation Survey form.
If you selected to receive shapefiles, a layer for legal boundaries is included
that you may edit. Refer to the Digital BAS Respondent Guide included on
the CD-ROM containing your shapefiles for instructions on making your
boundary edits.
Shapefiles

Shapefiles require the use of GIS software. The Census Bureau provides
county-based shapefile layers in Environmental Systems Research Institute 14
(ESRI) shapefile format. Participants that submit shapefiles with feature
updates must follow Census Bureau requirements.
The shapefiles, created from the MAF/TIGER database, allow you to submit
map feature updates electronically. All linear features in the MAF/TIGER
database are contained in the edges shapefile. Use the edges shapefile to add,
delete, or change linear feature attributes.
In addition to an edges shapefile, the Census Bureau provides shapefiles for
legal boundaries that you may edit. Refer to the Digital BAS Respondent
Guide included with your LUCA materials for boundary updates.
To geocode addresses to census blocks, a tabblock shapefile is included.
For more details on the contents of the shapefiles, view the readme.txt file that
is included in the CD-ROM containing your shapefiles.

All shapefiles provided by the Census Bureau are in Environmental Systems Research Institute (ESRI) format. The
use of brand names does not represent an endorsement of a company or its products by the U.S. government. Due to
the wide use of ESRI products by our partners in the GIS community, and ubiquitous use of the shapefile format as a
medium for GIS data exchange, the Census Bureau provides data in shapefile format.

Chapter 6: The Census Bureau Maps

Submitting Shapefile Feature Information

In order to submit digital feature information, you must have a GIS capable of
importing ESRI shapefiles, editing the features, and exporting layers back into
ESRI shapefile format.
The Census Bureau’s Shapefile Coordinate System and Projection
Information

All shapefiles provided by the Census Bureau are in the following
unprojected geographic based coordinate system:
•
•
•
•
•
•
•
•

GCS_NAD83
Angular Unit: Degree (0.017453292519943299)
Prime Meridian: Greenwich (0.000000000000000000)
Datum: D_North_American_1983
Spheroid: GRS_1980
Semi-major Axis: 6378137.000000000000000000
Semi-minor Axis: 6356752.31414035610000000
Inverse Flattening: 298.257222101000020000

Please feel free to project these files into your local coordinate
system/projection.
General File Setup Guidelines

Upon receipt of your shapefiles, follow the setup guidelines listed
below before beginning actual updates:
•

Open the CD and enclosed zip file to ensure it contains the
shapefiles for your entity.

•

Copy and decompress the shapefiles to a directory on your
server or hard drive.

•

Open the shapefile in a GIS.

Note: If you are using GIS software that does not contain a shapefile
translator, please contact the Help Desk at 866-919-5822 for further
instructions.
Changing Our Coordinate System to Match Yours

Our files are in GCS NAD83 format. Please feel free to project these
files into your local coordinate system projection. Most GIS software

Chapter 6: The Census Bureau Maps

packages contain projection wizards, or something similar, allowing
the user to transform file coordinate systems and projections. For
example, if your office uses ArcView to update files, please activate
and utilize ArcView’s ‘Projection Utility Wizard’ extension. If using
ArcGIS, please use its “Projection Utilities” in ArcToolbox.
MAF/TIGER extract shapefiles contain defined projection information
in the *.PRJ file. Both ArcView and ArcGIS access the *.PRJ file for
projection information; therefore, there is no need for you to define
these parameters before changing the file coordinate system.
In addition, if your files are in a datum other than NAD83, you must
geographically transform our files to match your datum. Most GIS
software has tools for performing geographic transformations on files.
If you transform the files to your local coordinate system, we request
that you convert them back to the GCS NAD83 format before
submitting the file to the Census Bureau. If you encounter problems
transforming our files, please contact the Help Desk at 866-919-5822
for assistance.
Feature Information

The Census Bureau will collect feature changes designated by the
LUCA participant.
If you have reviewed your features using our shapefiles and have
determined that the Census Bureau needs to add, remove, or rename
features in a given area, you may submit your modifications in a
separate layer. To move or correct the shape of a feature, first delete
the feature then add the correction.
Use the appropriate update code located in the coding scheme as
shown in Figure 6.9 to identify the type of feature modification needed
for submission.
If any issues arise with the shapefiles that you submit, your Census
Bureau Regional Office will attempt to contact you to clarify the issue.
If clarification is not made prior to our project deadline, the updates
may not be incorporated into MAF/TIGER. Your updates are
considered temporary until their existence is confirmed during our
Address Canvassing Operation.
Updating the Feature Shapefile

Use the edges layer to provide all feature updates to the Census
Bureau’s shapefile.

Chapter 6: The Census Bureau Maps

Edges Layer Data Dictionary

The data dictionary defines the attribute information for each feature
contained in the edges layer. See Figure 6.7 for an example of the
edges layer data dictionary.
Figure 6.7: Edges Layer Data Dictionary
Field

Length

TLID
MTFCC
FIDELITY
FULLNAME
CHNG_TYPE

10
5
1
120
4

Type

Integer
String
Integer
String
String

Description

TIGER/Line ID
Feature MTFCC
Shape Fidelity Flag
Feature name
Type of digital linear update

•

TLID is the TIGER/Line ® ID

•

The MAF/TIGER Feature Class Code or MTFCC is used to
identify the most noticeable characteristic of a feature.
o The MTFCC is a five-character code; the first character is
a letter describing the feature class. For example, streets
and roads are identified as S1400.
o The Census Feature Class Codes or CFCC were recently
changed to the MTFCC. A crosswalk is on the following
page as well as in the readme.txt file on your CD-ROM.

• If the FIDELITY flag contains a value of ‘1’, the Census Bureau

was unable to maintain the boundary’s shape during the
MAF/TIGER Accuracy Improvement Process (MTAIP).
o The MTAIP project acquired geographic information
system (GIS) files, aerial photography, and GPS data from
various sources nationwide to update the TIGER® database.
o One of the primary goals of the project was to develop a
highly accurate geographic database of the United States.
The Census Bureau focused on improving the accuracy of
street feature coordinates to provide base information
suitable for use with GPS-equipped hand held devices that
would facilitate the gathering of accurate location and
census information for all living quarters and workplaces.
o To aid the Census Bureau in developing a highly accurate
geographic database, please review all line segments (not
just roads) in the Census Bureau’s edges layer for lines

Chapter 6: The Census Bureau Maps

with this flag. Make necessary boundary corrections to the
affected entity if the boundary has been coordinately
shifted.

•

FULLNAME is the feature name.

•

CHNG_TYPE is the type of digital linear update.

Figure 6.8: Census Feature Classification MTFCC to CFCC Crosswalk
Census Feature Classification MTFCC to CFCC Crosswalk
Road Features
MTFCC
S1100
S1200
S1400
S1500
S1630
S1640
S1710
S1720
S1730
S1740
S1750

FEATURE NAME
Interstate Highway or Primary Road with
limited access
Primary Road without limited access, US
Highway, State Highway, or County Highway,
Secondary and connecting roads
Local Neighborhood Road, Rural Road, City
Street
Vehicular Trail (4WD)
Ramp
Service Drive usually along a limited access
highway
Walkway/Pedestrian Trail
Stairway
Alley
Private Road for service vehicles (logging, oil
fields, ranches, etc.)
Private Driveway

CFCC
A11, A12, A13, A14, A15, A16, A17,
A18, A19
A21, A22, A23, A24, A25, A26, A27,
A28, A29, A31, A32, A33, A34, A35,
A36, A37, A38, A39
A41, A42, A43, A44, A45, A46, A47,
A48, A49, A61, A62
A51, A52, A53
A63
A64
A70, A71
A72
A73
A74
N/A

Water Features
MTFCC
H3010
H3013
H3020

FEATURE NAME
Stream/River
Braided Stream
Canal, Ditch or Aqueduct

CFCC
H10, H11, H12, H76, H77
H13
H20, H21, H22

Railroad
MTFCC
R1011
R1051
R1052

FEATURE NAME
Railroad Feature (Main, Spur, or Yard)
Carline, Streetcar Track, Monorail, Other
Mass Transit Rail
Cog Rail Line, Incline Rail Line, Tram

CFCC
B11, B12, B13, B14, B15, B16, B19, B21,
B22, B23, B29, B31, B32, B33, B39
B51, C31
B52

Miscellaneous Features
MTFCC

Feature Name

P0001

Nonvisible Legal/Statistical Boundary

L4010
L4020
L4110
L4121
L4031
K2451
L4140
L4165

Pipeline
Power Transmission Line
Fence Line
Ridge Line
Aerial Tramway/Ski Lift
Airport or Airfield
Property/Parcel Line
Ferry Crossing

CFCC
F00, F10, F11, F12, F13, F14, F15, F16,
F17, F18, F19, F20, F21, F22, F23, F24,
F25, F50, F52, F70, F71, F72, F73, F74,
F80, F81, F82, F83, F84, F85, F86, F87,
F88
C10
C20
E10
E21
N/A
D51
F40, F41
A65, B40
53

Chapter 6: The Census Bureau Maps

Change Type Codes for Feature Corrections

Each updated line to the edges layer must contain one of the change
type codes (Add Line, Change Attribute, Delete Line) listed in the
coding scheme in Figure 6.9. Record the change type code in the
CHNG_TYPE field in the attribute table for each line.
Figure 6.9: Change Type Codes for Feature Corrections
Code

AL
CA
DL

Description

Add Line
Change Attribute
Delete Line

Each feature update must have a change type code in the change type
field for the line.
•

There are three change type codes:
1. Add Lines

Code – AL

Used to add a new feature (Road, Railroad,
Hydrography, etc.)

2. Change Attribute
Change Name

Code – CA

Used to change the name of a feature

Provide the feature’s new name in the
FULLNAME field

Change Feature Class

Code – CA

Used to change the feature class code (e.g., a local
road mistakenly coded as a highway).

3. Delete Line

Code – DL

Used to delete a feature

Refer to the following examples.

Chapter 6: The Census Bureau Maps

Examples
1. Adding a Feature to the Edges Layer

Spring Street is a new street that needs added to the Census
Bureau’s shapefile.
•

Add or copy the missing street or feature into the edges
layer.
In the attribute table:
1. Leave the TLID and FIDELITY fields blank.
2. Enter the appropriate MTFCC. In this example,
S1400.
3. Enter the feature name in the FULLNAME field (if
any), in this case Spring Street.
4. Enter AL in the CHNG_TYPE field.

2. Correcting a Feature Name

Ryan Street is incorrectly identified as Bryan Street.
In the attribute table:
1. Edit the FULLNAME field, in this case correcting it
from Bryan Street to Ryan Street.
2. Enter CA in the CHNG_TYPE field.
3. Procedure for changing the MTFCC of an existing feature

A local road was mistakenly coded as a highway.
In the attribute table:
1. Edit the MTFCC from S1400 to S1200.
2. When changing the feature class code of a feature, enter
CA in the CHNG_TYPE field (i.e., a local road was
mistakenly coded as a highway).
4. Deleting a feature

A section of Dunlap Street no longer exists. In addition, the entire
length of Carlisle Street has been replaced by a park.

Chapter 6: The Census Bureau Maps

In the attribute table:
1. Enter DL in the CHNG_TYPE field for the segment of
Dunlap Street that no longer exists.
2. Enter DL in the CHNG_TYPE field for all of the
segments for Carlisle Street which no longer exist.
5. Moving a street

The Census Bureau shapefile incorrectly shows the location of
Winona Street.
Add Winona Street in the correct location in the edges layer.
In the attribute table:
1. Enter DL in the CHNG_TYPE field for the incorrect
segment(s) of Winona Street to be deleted.
2. For the new street segment(s), leave the TLID and
FIDELITY fields blank.
3. Enter the appropriate MTFCC.
4. Enter Winona Street in the FULLNAME field.
5. Enter AL in the CHNG_TYPE field.
To move or correct the shape of a feature, first delete the
incorrectly placed or aligned feature and then add the correction.

Figure 6.10: Example Attribute Table Updates
TLID

MTFCC

FIDELITY

FULLNAME

CHNG_TYPE

S1400

Spring Street

S1400

Winona Street

9999999995 S1400

Ryan Street

9999999996 S1400

Dunlap Street

9999999997 S1400

Carlisle Street

9999999998 S1400

Carlisle Street

9999999999 S1400

Winona Street

Chapter 6: The Census Bureau Maps

Examples:
•
•
•
•
•

Spring Street added
Bryan Street corrected to Ryan Street
Segment of Dunlap Street deleted
Carlisle Street deleted
Winona Street moved

Figure 6.11: Digital Road Correction Example
Road Name Change: In the
attribute table, populate the
CHNG_TYPE field with ‘CA’ and the
new road name in the FULLNAME
field for each affected segment.

New Road Feature: Include all new road segments,
in the attribute table. Populate the new road name in
the FULLNAME field for all new segments, and populate
the CHNG_TYPE field with ‘AL.’

Delete Feature: Include all road
segments that you want to delete,
and populate the CHNG_TYPE field
with ‘DL’ in the attribute table

Road Segments

Copy all features with values in the CHNG_TYPE field into a new
feature update shapefile. The feature updates shapefile will resemble what
is shown in Figure 6.11.

Chapter 6: The Census Bureau Maps

Metadata
Metadata Requirements

Submit appropriate metadata with your file.
Metadata that describe the data content, coordinate system/projection,
author, source, and other characteristics of GIS files are critical for Census
Bureau staff to efficiently and accurately process files. The Census
Bureau requires that a metadata text file accompany every GIS file and
layer submitted.
The Federal Geographic Data Committee’s (FGDC) Content Standard for
Digital Spatial Metadata provides a national standard that enables the datasharing public to easily locate critical information about a file and ensure
that no critical information is omitted inadvertently when creating
metadata. For this reason, the Census Bureau requests that metadata be
submitted using this standard. For information about the FGDC and its
geospatial metadata standards, please visit http://www.fgdc.gov/metadata.
The Census Bureau requires that the following sections of the FGDC
metadata form be completed:
•

Citation (information about the originator, publication date, title
edition, and other publications or information).

•

Description (section that contains an abstract describing your data
set).

•

Time period of content (section that describes the vintage of the
data).

•

Spatial domain (information about bounding coordinates).

•

Point of contact (general contact information).

•

Data quality information (information about attribute accuracy).

•

Spatial reference information (section on coordinate system /
projection of the data set).

•

Entity and attribute information (section that describes the contents
of your table).

To help you fulfill the requirement of filling out and submitting metadata,
the Census Bureau suggests visiting the United States Geological Survey
(USGS) web site at www.usgs.gov. This site contains useful information
about FGDC compliant metadata, from which one can read about metadata
frequently asked questions, view FGDC metadata examples, and connect
to other FGDC related Web pages. The USGS's metadata URL is
http://www.fgdc.gov/metadata.
58

Chapter 6: The Census Bureau Maps

Moreover, if you are using Arc/Info, the following link points to a useful
Arc Macro Language (AML) tool that, when executed, completes most of
the required sections of the metadata form automatically
http://marinemetadata.org/tools/refs/FGDCMeta. (This AML is a product
of the Illinois State Geological Survey.)
Note: ESRI’s ArcCatalog also has an embedded program that uses the
FGDC standard in its creation of geospatial metadata.
If you have questions regarding the metadata requirements, please contact
the Census Bureau at the Help Desk (866-919-5822).
Digital File Submission

Use the following as a guide to ensure that you have included all the
required layers.
•

Name the feature update layer:
LUCA__LN_changes.shp
The feature update layer must include:
o A value in its “CHNG_TYPE” field that indicates the type
of change.
o Only feature updates (do not include unmodified features).

•

Include the appropriate metadata.

CHAPTER 7
SUBMITTING YOUR LUCA PROGRAM UPDATES
Submitting LUCA Program Updates
Shipping Your LUCA Materials

Submitting LUCA Program Updates

After completing your review and update of the LUCA materials, return the
materials with updates to the Census Bureau’s Regional Office responsible for
your jurisdiction (See the back cover for a list of Regional Offices.) Include
the inventory form in Appendix F with your returned materials. Be sure to
follow the procedures for shipping Census Bureau Title 13 Materials as
outlined in this chapter.
Preparing the Address List and Address Count List Files for
Submission
•

Return only those records with updates on a CD-ROM or DVD
as explained in Chapters 4 and 5 “Saving the File”.

•

Make a copy of your edited files to keep for your records and to
use during the Feedback phase of the program.
o All Address List copies are Title 13 address information. Keep
all copies in a secure location.

•

ZIP and password protect the file.
o If you do not have ZIP software, Freebyte ZIP software is
provided on your CD-ROM.
o Use the case sensitive password provided to you by the Census
Bureau.

•

Burn the file to a CD-ROM or DVD.

Note: You may burn all of the files you are submitting, the Address
List, Address Count List, and shapefiles to one (1) CD-ROM or DVD.
•

Send the CD-ROM or DVD with updates to your Census Bureau
Regional Office.

•

You may not submit an e-mail or post the file to an FTP site.

Sorting the Census Bureau’s Paper Maps for Submission

•

Separate the map sheets with updates from those without updates.

•

Make a copy of all map sheets containing updates to keep for your
records to use during the Feedback phase of the program.

Chapter 7: Submitting Your LUCA Program Updates

•

Organize the map sheets by map sheet number.

•

Fold the maps if there are five (5) or fewer map sheets.

•

If there are more than five (5) map sheets, roll the maps and mail
them in a mailing tube or box.

Return only those map sheets containing updates.
Preparing the Shapefiles for Submission
•

Name the feature update layer:
LUCA__LN_changes.shp

Compressing the File
•

Compress all updated materials – Shapefile and Metadata -- into
one ZIP formatted file called:
LUCA_2010__Return.ZIP

Note: If you have boundary updates, ZIP the file and burn to a CDROM after making your boundary updates.
•

Burn the file to a CD-ROM or DVD.

•

Save a backup copy of your updated digital file for your records
and to use during the Feedback phase of the program.

Note: You may burn all of the files you are submitting, the Address
List, Address Count List, and shapefiles to one (1) CD-ROM or DVD.
Shipping Your LUCA Materials
•

Double wrap all address materials.

•

Address all envelopes, mailing boxes, mailing tubes, etc. to:
ATTN: GEOGRAPHY
Director, Census Bureau Regional Office
Address for your Census Bureau Regional Office
You can find a list of the Census Bureau’s Regional Office addresses
on the back cover.

•

Use shipping contractors that provide tracking services, such as U.S.
Postal Service (USPS) certified or registered mail, Fed Ex, United
Parcel Service (UPS), or similar service.

CHAPTER 8
RETURNING OR DESTROYING CENSUS BUREAU TITLE 13, U.S.C.
MATERIALS
Conclusion
Returning Census Bureau Title 13, U.S.C. Materials
Destroying Census Bureau Title 13, U.S.C. Materials

Conclusion

At the conclusion of the appeals process, you must return to the Census
Bureau or destroy all Title 13, U.S.C. address lists and all copies. If you
choose to destroy Title 13, U.S.C. materials, you must follow the Census
Bureau’s specific guidelines for destroying Title 13 materials as described
below or in the Confidentiality and Security Guidelines.
The designated liaison is required to verify the return or destruction of any
remaining Title 13 materials, both paper and computer-readable (i.e. paper
copies, backup files, etc.) by signing and returning to the Census Bureau the
Return or Destruction of Title 13, U.S.C. Materials form found in Appendix H.
If you return your Title 13 materials to the Census Bureau, this form must be
included. All LUCA Program reviewers and anyone with access to Title 13
materials (includes all persons who signed the Confidentiality Agreement
Form) are required to sign and date this form once the appeals process has
concluded. Should any liaison, reviewer, or anyone with access to Title 13
materials leave before the completion of the LUCA Program, they are required
to sign-out of the program by signing and dating this form. If any liaison or
reviewer leaves and fails to sign and date this form, the current liaison can
sign-out on their behalf.
Returning Census Bureau Title 13, U.S.C. Materials
•

Double wrap all Title 13 materials. This includes all paper copies
and backup files of the Address List and Feedback maps
containing structure points.

•

Label both sides of the inner envelope or wrapping with the
disclosure notice as shown below and in Appendix G:
“This Package Contains U.S. Census Bureau Address
Information: DISCLOSURE PROHIBITED BY Title 13 U.S.C”

•

Do not label the outer envelope with the disclosure notice.

•

Address all envelopes, mailing boxes, mailing tubes, etc. to:
ATTN: GEOGRAPHY
Director, Census Bureau Regional Office
Address for your Census Bureau Regional Office

Chapter 8: Returning or Destroying Census Bureau Title 13, U.S.C. Materials

You can find a list of the Census Bureau’s Regional Office
addresses on the back cover.
•

Use shipping contractors that provide tracking services, such as
U.S. Postal Service (USPS) certified or registered mail, Fed Ex,
United Parcel Service (UPS), or similar service.

Destroying Census Bureau Title 13, U.S.C. Materials
•

Only those individuals who signed the Confidentiality Agreement
Form are permitted to destroy the materials.

•

Never deposit Census Bureau confidential materials in a trash or
recycle container before destruction.

•

Store the materials in a secure area in a container labeled
“document destruction container” until they are destroyed.

•

The destruction process must prevent recognition or reconstruction
of the paper or computer-readable information. Use one of the
following methods to destroy census confidential materials:
o
o
o
o
o

Shredding.
Chemical decomposition.
Pulverizing (such as, hammer mills, choppers, etc.).
Burning (only in a facility approved by the Environmental
Protection Agency).
Clear magnetic media (tapes, disks, hard drives) containing
Census Bureau address information before reuse. To clear,
overwrite all Title 13 data a minimum of three times using a
commercial disk utility program or degauss using a commercial
degausser.
Clear diskettes by running a magnetic strip of sufficient length
to reach all areas of the disk over an under each surface a
minimum of three times. If the information cannot be
destroyed as suggested, the disk must be damaged in an
obvious manner to prevent use in any disk drive unit and
discarded.
Destroy CD-ROMs and DVDs using a commercial grade
shredder, suitable for rendering them un-useable; or cut them
up with scissors in an obvious manner to prevent use in a drive
unit.

Note: Hand tearing or burying information in a landfill are
unacceptable methods of disposal.
If you have questions regarding the destruction of Title 13 materials,
contact your Census Bureau Regional Office.
63

APPENDICES

Appendix A
Confidentiality and Security Guidelines
The law requires the U.S. Census
Bureau to maintain the confidentiality
for all of the information that it collects.
The Census Bureau takes its
responsibility to protect the
confidentiality of the information it
collects very seriously. Respondents
place their trust in the Census Bureau
each time they complete a survey or an
interview. This trust in confidentiality is
critical to the success of the Census
Bureau’s mission to collect and report
the most accurate data possible. To
uphold the law, the Census Bureau
requires that all individuals who work
with the Census Bureau’s confidential
materials read, understand, and agree to
abide by the confidentiality and security
guidelines outlined below.

thereof to examine the individual
reports.”
Section 214 of the Code and the
Uniform Sentencing Act of 1984 set the
penalty for the wrongful disclosure or
release of information protected by Title
13 at a fine of not more than $250,000
or imprisonment for not more than 5
years, or both.
To implement this law, all Census
Bureau employees (both temporary and
permanent) take an oath to maintain the
confidentiality of the census information
they encounter in their work. Census
information includes:
•

Everything on a completed or
partially completed questionnaire or
obtained in a personal or telephone
interview.

•

Individual addresses maintained by
the Census Bureau that Local
Update of Census Addresses
(LUCA) Program liaisons review.

•

Maps that identify the location of
individual housing units and/or
group quarters (“structure points”).

Why Address Information Is Protected

Title 13, United States Code (U.S.C.),
provides for the confidential treatment
of census-related information. Chapter
1, Section 9 of the code states:
“Neither the Secretary, nor any other
officer or employee of the Department of
Commerce or bureau or agency thereof,
or local government census liaison,
may, except as provided in section 8 or
16 or chapter 10 of this title…
1) use the information furnished under
the provisions of this title for any
purpose other than the statistical
purposes for which it is supplied; or
2) make any publication whereby the
data furnished by any particular
establishment or individual under
this title can be identified; or
3) permit anyone other than the sworn
officers and employees of the
Department or bureau or agency

Title 13 of the U.S.C. does not protect
generalized address information, such as
the address range data available in the
Census Bureau’s digital shapefile
products.
In 1994, the U.S. Congress amended
Chapter 1 of Title 13 to allow local
government designated census liaisons
to review the Census Bureau’s address
list for their area. This amendment
recognizes the important role that local
knowledge and participation can play in
building and updating an accurate,
comprehensive census address list. In
amending this chapter, the Congress

Appendix A: Confidentiality and Security Guidelines

reaffirmed the confidential nature of
address information.
The Confidentiality Agreement

Each participating government must
designate a primary liaison. The
primary liaison, all reviewers, and
anyone with access to Title 13, U.S.C.
materials must understand and sign the
Confidentiality Agreement. The Census
Bureau considers all individuals who
have access to the Census Bureau’s
address information and maps showing
the location of housing units and group
quarters, liaisons. Therefore, all Option
1 and Option 2 2010 Decennial Census
LUCA Program liaisons, reviewers, and
anyone with access to Title 13 materials
must sign the Confidentiality
Agreement.
Signatures on this form constitute an
agreement by each individual to abide
by the security guidelines outlined
below. While access to Title 13
protected information is temporary, the
commitment to keep the information
confidential is permanent.
•

The Census Bureau will not
deliver the address list materials
to Option 1 and Option 2
participants until we have
received a completed and signed
Confidentiality Agreement and
Self-Assessment Form.

•

Although you may have prior
confidentiality agreements on file
at the Census Bureau, these will
not fulfill the requirements of the
2010 Decennial Census LUCA
Program.

Security Guidelines

The Census Bureau recognizes the fact
that the implementation of these
guidelines may vary slightly from one
participant to another. Regardless, the

result must be the same for each
participant – nondisclosure of
information protected by Title 13,
U.S.C.
The primary liaison accepts the
responsibility for protecting and
safeguarding the LUCA program
materials covered by Title 13, U.S.C.
This includes any list that shows
individual Census Bureau addresses
and any Census Bureau map or digital
file that shows individual housing units
and/or group quarters location
(“structure points”). The primary
liaison must restrict access to the Census
Bureau’s address information to those
individuals who have signed the
Confidentiality Agreement. The liaison,
reviewers, and anyone with access to
Title 13 materials must sign the
Confidentiality Agreement.
As you read the Census Bureau’s
security requirements, keep in mind the
important role security plays in the
overall responsibilities of each LUCA
program liaison, reviewers, and anyone
with access to Title 13 materials. The
Census Bureau must have your full
cooperation and commitment to
following these guidelines. Together,
we will maintain the confidential
information entrusted to the Census
Bureau by the Congress and the
American public.
Protecting Census Bureau Address
Information

The Census Bureau will conduct
training workshops covering all aspects
of the LUCA program. In addition, the
workshops will provide the participating
governments with an opportunity to
review the security guidelines and
safeguards to protect against illegal use
of Census Bureau address information.
Census Bureau staff conducting the
workshops will provide information to
help you decide who in your

Appendix A: Confidentiality and Security Guidelines

Bureau address information is
stored. Lock the room whenever
you leave.

organization needs to have access to the
Census Bureau’s Address List and will
review the civil and criminal penalties
for improper or illegal use of the data.
•

Do not leave Census Bureau address
information unattended at your
desk. Return any Title 13 data to
secure storage when you are not
using it.

•

Only make copies of the
information necessary to complete
your task. Do not leave the copying
machine unattended while making
copies. All copied material
containing Title 13 information
must bear the statement:

Onsite Visits

To ensure that participating entities or
organizations are maintaining adequate
security safeguards, the Census Bureau
may make on-site visits to review your
government or organization’s security
procedures. The Census Bureau will
strive not to disrupt your office
operations. A typical visit would
include a review of:
•

Storage and handling of Census
Bureau address information.

•

Employee access to Census Bureau
address information.

•

The physical safeguard of the
computers, rooms, and buildings
where the Census Bureau address
information is stored.

•

Instructions to employees about
security.

•

Data processing operations
(including use of passwords).

•

Employee awareness of their
responsibilities to protect the
confidentiality of Census Bureau
addresses.

“This document contains
information, the release of which
is prohibited by Title 13, U.S.C.,
and is for U.S. Census Bureau
official use only. Wrongful
disclosure or release of
information can be punished by
fine or imprisonment (Public
Law 99-474).”
•

To FAX a document containing
Census Bureau address information
to a Census Bureau location, make
sure the document is properly
labeled with the disclosure
statement: “DISCLOSURE
PROHIBITED BY Title 13,
U.S.C.”, verify the FAX number
before sending, and arrange for a
Census Bureau employee to be at
the FAX machine to receive it and
acknowledge receipt.

•

Do not disclose precise or even
anecdotal information about Census
Bureau addresses or locations to
anyone who has not signed the
Confidentiality Agreement Form or
is not a Census Bureau employee.

Protecting Paper Copies of Census
Bureau Address Information and Maps

•

Keep all Census Bureau address
information in a locked room during
non-work hours. If possible, store
the Census address materials and
maps showing structure points in
locked desks or cabinets.

•

During work hours, do not leave a
room unattended where Census
Appendix A: Confidentiality and Security Guidelines

Protecting Computer-Readable Census
Bureau Address Information and Maps

Operating systems, programs,
applications, and data related to the
review of Census Bureau addresses must
be accessible only to LUCA program
liaisons and reviewers. The automated
data processing (ADP) system should
restrict the read, write, delete, and
execute functions applicable to the
Census Bureau’s addresses.
The ADP system must use log-on
routines that require a user-ID and
password that conform to the following
guidelines:
•

Assign a unique user-ID and
password for liaisons, reviewers,
and anyone with access to Title 13
materials.

•

Passwords must consist of at least 8,
nonblank characters consisting of at
least one alphabet letter and either
one number or one special character
($,*, &). No more than six
consecutive characters (AAAAAA)
may appear in the password, and
then only once.

•

Reject passwords that are the same
as the user-ID or that have been
used within the last 6 months.

•

Encrypt passwords.

•

Disable passwords after three bad
attempts.

•

Do not display passwords on
terminals or printers.

•

Change passwords every 90 days
(more frequent change is optional)
or immediately, if compromised.

•

On new accounts, the user must
change the assigned password to a

unique password the first time they
log on.
The ADP system must display a
warning log-on feature. Computer
screens must display a warning that
states:
**WARNING*WARNING*WARNING**
YOU HAVE ACCESSED A COMPUTER
SYSTEM CONTAINING UNITED STATES
GOVERNMENT INFORMATION. USE OF
THIS COMPUTER WITHOUT
AUTHORIZATION OR FOR PURPOSES
FOR WHICH AUTHORIZATION HAS NOT
BEEN EXTENDED IS A VIOLATION OF
FEDERAL LAW AND CAN BE PUNISHED
BY FINE OR IMPRISONMENT (Public Law
99-474). ALL USE MAY BE
INTERCEPTED, MONITORED,
RECORDED, COPIED, AUDITED,
INSPECTED, AND DISCLOSED TO
AUTHORIZED LAW ENFORCEMENT
OFFICIALS. REPORT SUSPECTED
VIOLATIONS TO YOUR AGENCY
SECURITY OFFICER. USE OF THIS
SYSTEM INDICATES YOU CONSENT TO
THIS WARNING. LOG OFF
IMMEDIATELY IF YOU DO NOT AGREE
TO THE CONDITIONS OF THIS
WARNING.
**WARNING*WARNING*WARNING**

If Census Bureau address information is
placed on a shared computer system,
construct electronic security profiles to
allow only LUCA program liaisons,
reviewers, and anyone with access to the
Census Bureau’s address information.
Test your security to ensure that only
LUCA liaisons and reviewers are
permitted access to the Census Bureau’s
address information.
ZIP and password protect Title 13
Census Bureau address information.
Lock all rooms containing computers
with Title 13 Census Bureau address
information and all associated media
during non-work hours.
Do not leave computers with Census
Bureau address information unattended
during work hours. Log-off the

Appendix A: Confidentiality and Security Guidelines

computer/system or lock the room
whenever you leave.
Label any computer diskettes, CDROMs, DVDs, tapes, cartridges or other
computer storage media containing
Census Bureau address information with
the following:
“This document contains information,
the release of which is prohibited by
Title 13, U.S.C., and is for U.S. Census
Bureau official use only. Wrongful
disclosure or release of information
can be punished by fine or
imprisonment (Public Law 99-474).”
If backup is necessary, do not send the
tapes, cartridges, or disks off-site. Store
them in a secured area. Do not mix,
store, or back-up LUCA data with
other data.
Clear magnetic media (tapes, disks, hard
drives) containing Census Bureau
address information before reuse. To
clear magnetic media, overwrite all Title
13 data three times at a minimum using
a commercial disk utility program or
degauss using a commercial degausser.

with updates to the Census Bureau’s
Regional Office responsible for your
jurisdiction. Make a copy of all updated
pages to keep for your records. Retain
all non-annotated Title 13 materials until
you receive your feedback materials.
Keep all retained address lists and
copies in a secure location.
Use the following guidelines to ship the
updated materials:
•

Ship all Census Bureau confidential
material in two opaque sealed
envelopes that are durable enough to
prevent someone from viewing or
tampering with the enclosed
materials.

•

Label both sides of the inner
envelope or wrapping with the
disclosure notice:
“DISCLOSURE PROHIBITED
BY Title 13, U.S.C.”

•

DO NOT label the outer envelope
with the “DISCLOSURE
PROHIBITED BY Title 13,
U.S.C.” notice.

Program any software you develop for
displaying the Census Bureau addresses
to label each affected page of a printout
containing Census Bureau address
information with the following:

•

Address the outer envelope to:

“This document contains information,
the release of which is prohibited by
Title 13, U.S.C., and is for U.S. Census
Bureau official use only. Wrongful
disclosure or release of information
can be punished by fine or
imprisonment (Public Law 99-474).”

•

Returning Census Bureau Title 13
Materials

Once you have completed your initial
review and update of the LUCA
materials, return only those materials

ATTN: Geography
Director, Census Bureau Regional
Office for your jurisdiction.
Use shipping contractors that
provide tracking services, such as
U.S. Postal Service certified or
registered mail, FedEx, United
Parcel Service, or similar service.

Return or Destruction of Census Bureau
Confidential Materials

After the appeals process has concluded,
all Title 13, U.S.C., Census Bureau
address lists and maps containing
structure points must be returned or
destroyed according to the Census

Appendix A: Confidentiality and Security Guidelines

Bureau’s specific guidelines for
returning or destroying confidential
material.
The liaison is required to verify the
return or destruction of any remaining
Title 13 materials, both paper and
computer-readable including all paper
copies, backup files, etc. The liaison
must sign and return to the Census
Bureau the “Return or Destruction of
Title 13, U.S.C. Materials” form. In
addition, all LUCA program reviewers
and anyone with access to Title 13
materials who signed the Confidentiality
Agreement are required to sign this form
once their participation in the LUCA
program has ended. Should any liaison,
reviewer, or anyone leave before the end
of the LUCA program, they are required
to “sign-out” of the program by signing
and dating this form.

Burning (only in a facility
approved by the Environmental
Protection Agency)

Clear magnetic media (tapes,
disks, hard drives) containing
Census Bureau address
information before reuse. To
clear, overwrite all Title 13 data
a minimum of three times, using
a commercial disk utility
program or degauss using a
commercial degausser.

Clear diskettes by running a
magnetic strip of sufficient
length to reach all areas of the
disk over and under each
surface a minimum of three
times. If the information cannot
be destroyed as suggested,
damage the disk in an obvious
manner to prevent use in any
disk drive unit and discard.

Only those individuals who signed the
Confidentiality Agreement are permitted
to destroy Title 13, U.S.C. materials.
•

Never deposit Census Bureau
confidential materials in a trash or
recycle container before destruction.

•

Store the materials in a secure area
in a container labeled “document
destruction container” until they are
destroyed.

•

The destruction process must
prevent recognition or
reconstruction of the paper or
computer-readable information.
Use one of the following methods to
destroy census confidential
materials:
c

Shredding

Chemical decomposition

Pulverizing (such as, hammer
mills, choppers, etc.)

Note: Hand tearing or burying
information in a landfill are
unacceptable methods of
disposal before destruction.
c

Destroy CD-ROMs and DVDs
using a commercial grade
shredder, suitable for rendering
them un-usable, or cut them up
with scissors in an obvious
manner to prevent use in a drive
unit.

Appendix A: Confidentiality and Security Guidelines

Appendix B
The Map Legend

Appendix B: The Map Legend

The map legend describes the various symbols and colors used on the paper maps.
The legend is divided into three columns:
1. The Symbol Description column includes the type of features, boundaries,
and geography shown on the map.
2. The Symbol column shows the symbols representing the feature in the
symbol description.
3. The Name Style column shows an example of the name of a particular
feature such as a road, waterway, or geographic area displayed on the map.
Boundaries
The first group of symbols in the legend refers to different boundary types or
geographic area shown on the map. Each type of boundary has a distinct color or
symbol.

Appendix B: The Map Legend

Transportation
The second group of symbols
represents various types of
transportation features. Thicker
lines identify major roadways
such as interstates and U.S.
highways while thinner lines
represent secondary roads and
city streets. Also identified are
cul-de-sacs and circles. Jeep
trails, walkways, stairway, and
ferries, represented by distinctive
dashed lines, are included in this
section.

Other Features
The third group of symbols represents other
feature types such as pipelines and streams
and non-visible boundaries. Streams and
shorelines are blue and geographic offset and
corridors are speckled red.

Appendix B: The Map Legend

Landmarks
The last group of symbols
represents various landmarks on the
map such as rivers and lakes,
glaciers, airports, cemeteries, golf
courses, jails, military installations,
parks, and mountain peaks. The
area outside of the subject area is
speckled gray.

Footnotes and Notes
The footnote and notes section of the legend provide additional information and details on
geographic relationships, boundaries, and symbols

Appendix B: The Map Legend

Appendix C
Physical Location Description and Street Type Abbreviation Examples

Full Name
Alternate Route
Avenue
Blue
Boulevard
Brown
Boarded Up
Circle
County Highway
County Road
Court
Drive
East
Four-Wheel Drive Trail
Freeway
Green
General Delivery
Hospital
Highway Contract Route
House
Interstate
Intersection
Lane
North
Parkway
Post Office Box
Road
Route
Rural Route
South
Star Route
State Highway
State Road
State Route
Street
Thoroughfare
Township Highway
Township Road
West
White
Yellow
With

Abbreviations
ALT
AVE
BL
BLVD
BRN
BU
CIR
CO Hwy
CO Rd
CT
DR
E
4WD
FWY
GR
GEN DEL
HOSP
HCR
HSE
I
INT
LN
N
PKWY
PO BOX
RD
RTE
RR
S
ST RT
ST HWY
ST RD
ST RTE
ST
THFR
TWP HY
TWP RD
W
WHT
YLW
W/

Appendix C: Physical Location Description and Street Type Abbreviation
Examples

Appendix D
Unit Designation Abbreviation Examples

Name
Apartment
Basement
Bottom
Downstairs
Floor
Front
Interior
Level
Lower
Middle
Mobile Home
Number
Penthouse
Room
Right
Space
Studio
Suite
Suites
Trailer
Upper
Upstairs

Abbreviation
APT
BSMT
BOTM
DOWN
FLR
FRNT
INTE
LVL
LOWR
MIDL
MH
#
PH
RM
RGHT
SP
STUD
STE
STES
TRLR
UPPR
UPPR

Appendix D: Unit Designation Abbreviation Examples

Appendix E
Confidentiality Agreement Form

Appendix E: Confidentiality Agreement Form

Appendix F
Inventory Form

Appendix F: Inventory Form

Appendix G
Special Disclosure Notice

Special Notice

This Package Contains
U.S. Census Bureau
Address Information

DISCLOSURE PROHIBITED BY
TITLE 13, U.S.C.

U.S. Department of Commerce
U.S. Census Bureau
4/04/2007
D-1657

Appendix G: Special Disclosure Notice

Appendix H
Return or Destruction of Title 13, U.S.C. Materials Form

Appendix H: Return or Destruction of Title 13, U.S.C. Materials

Glossary

Address breaks – Address breaks are the city-style addresses on each side of a boundary
or at an intersection of street with another street or another feature.
Address count list – Identifies the number of housing unit addresses and group quarters
addresses on the Census Bureau’s address list for each census block within a jurisdiction.
Address range – The lowest and highest address numbers used to identify structures
along each side of a street segment that has city-style addresses. Usually one side of the
street has even address numbers and the other side has odd address numbers.
Block number – A 4-digit number, plus 1 alpha character block suffix, if applicable,
used by the Census Bureau to identify each census block. Census blocks are numbered
uniquely within each census tract.
Boundary – A line, either invisible or coincident with a visible feature that identifies the
extent of a geographic entity, such as a census tract, city, or county.
Boundary and Annexation Survey – An annual survey to collect information about
selected legally defined geographic areas. The BAS is used to update information about
the legal boundaries and names of all governmental units in the United States.
Census Bureau address list – A nationwide list of all housing unit and group quarter
addresses known to the Census Bureau. In addition to the mailing address and ZIP Code,
the Address List may identify the location of each housing unit and group quarters.
Census block – A geographic area bounded by visible features, such as streets, roads,
streams, and railroad tracks, and invisible features, such as the boundaries of
governmental units and other legal entities. A census block is the smallest area for which
the Census Bureau collects and tabulates statistical information. Census blocks are
numbered within census tracts and are unique to the census tract to which they belong.
Census block number –Census block numbers contain a 4-digit number plus a 1-digit
alpha character, if applicable, e.g. 3001A. Suffixes, such as 2011A and 2011B, reflect
boundary changes as well as added features.
Census Bureau – An agency within the U.S. Department of Commerce. The Census
Bureau is the country's preeminent statistical collection and dissemination agency. It
publishes a wide variety of statistical data about people and the economy of the nation.
The Census Bureau conducts approximately 200 annual surveys and conducts the
decennial census of the United States population.
Census Bureau map – Any map produced by the Census Bureau. A Census Bureau
map displays geographic entities used in a Census Bureau sponsored census or survey for
which the Census Bureau tabulates data.
Glossary

Census tract – A small, relatively permanent statistical division of a county or
statistically equivalent entity, delineated for the purpose of presenting Census Bureau
statistical data. Census tracts never cross the boundary of a county or statistically
equivalent entity, but may split other geographic entities; e.g., minor civil divisions and
places.
Census tract number – Unique numbers to identify census tracts within a county or
statistically equivalent entity. Census tract numbers contain up to a 4-digit number
followed by a decimal point and a 2-digit number for suffixed tracts, e.g., 1234.01. For
census tracts without a suffix, the number will contain a period with zero fill, e.g.,
4567.00. Leading zeros are not shown on Census Bureau maps.
Chief executive/highest elected official – The person most responsible for the
governmental activities of a local government. This person receives the LUCA Program
invitation letter, and must designate a LUCA liaison, if desired.
City-style address – An address that consists of a house number and street name; for
example, 201 Main Street. The address may or may not be used for the delivery of mail
and may include apartment numbers/designations or similar identifiers.
Confidentiality – The guarantee made by law (Title 13, United States Code) to
individuals who provide information about themselves or their business to the Census
Bureau. This item refers to the Census Bureau’s promise of nondisclosure of that
information to others.
County – The primary legal division of most states. Most are governmental units with
powers defined by state law.
Delivery Sequence File (DSF) – A computerized file containing all delivery point
addresses serviced by the U.S. Postal Service (USPS). The USPS updates the DSF
continuously as its letter carriers identify addresses for new delivery points or
changes in the status of existing addresses.
Edges shapefile – All linear features in the MAF/TIGER database are contained in the
edges shapefile. Use the edges shapefile to add, delete, or change linear feature
attributes.
Enumeration – The process of interviewing people and recording the information
on census forms.
Feature – Any part of the landscape, whether natural (such as, a stream or ridge) or
artificial (such as, a road or power line). In a geographic context, features are any part of
the landscape portrayed on a map, including nonvisible boundaries of legal entities, such
as, city limits or county lines.

Glossary

Federal Information Processing Standards codes (FIPS codes) – a standardized set of
numeric or alphabetic codes issued by the National Institute of Standards and Technology
(NIST) to ensure uniform identification of geographic entities through all federal
government agencies. The entities covered include: states and statistically equivalent
entities, counties and statistically equivalent entities, named populated and related
location entities (such as, places and county subdivisions), and American Indian and
Alaska Native areas.
Geocodes – Codes that place an individual address in its correct geographic location,
which includes the correct state, county, census tract, and census block codes.
Geographic Information System (GIS) – A computer system for the storage, retrieval,
and maintenance of information about the points, lines, and areas that represent the
streets and roads, rivers, railroads, geographic entities, and other features on the surface
of the Earth-information that previously was available only on paper maps.
Governmental unit – A geographic entity established by legal action for the purpose of
implementing specified governmental functions. Most governmental units provide a
number of general government services and raise revenues (usually through taxing
authority).
Group quarters – A place where people live or stay, in a group living arrangement, that
is owned or managed by an entity or organization providing housing and/or services for
the residents. This is not a typical household-type living arrangement. These services
may include custodial or medical care as well as other types of assistance, and residency
is commonly restricted to those receiving these services. People living in group quarters
are usually not related to each other.
Group quarters include such places as correctional facilities, juvenile facilities, nursing
homes, hospitals with long-term care facilities, college or university dormitories,
fraternities, sororities, dormitories for workers, religious group quarters, shelters, group
homes.
Housing unit (HU) – A single-family house, townhouse, mobile home, trailer,
apartment, group of rooms, or a single room occupied as a separate living quarters or, if
vacant, intended for occupancy as a separate living quarters. A separate living quarters is
one in which one or more occupants (or intended occupants, if vacant) live separate from
any other individual(s) in the building and have direct access to the living quarters
without going through another living quarters, such as from outside the building or
through a common hall.
Legal boundary – The legally defined boundary of a governmental unit, usually
referring to a county, minor civil division, or incorporated place. The legal boundary
identifies the area within a local government's jurisdiction, and thus bounds the area of
LUCA responsibility.

Glossary

LUCA liaison – Also known as the program primary liaison or designated liaison. A
person voluntarily appointed by the chief executive/highest elected official of each
jurisdiction to review the Census Bureau’s address list and maps against local records to
identify differences.
MAF/TIGER Partnership Software (MTPS) – A GIS application provided by the
Census Bureau that has customized functionality required by Census Bureau geographic
partnership programs.
Map Sheet to Block Number Relationship List – A list identifying census block
numbers and the Census Bureau map(s) on which each block is located.
Master Address File (MAF) – A nationwide database of all addresses to support many
of the Census Bureau’s operations. Besides containing mailing addresses and ZIP
Codes, a MAF record also contains geographic information about the location of
addresses.
Metadata – describes the data content, coordinate system/projection, author,
source, and other characteristics of GIS files.
Minor civil division (MCD) – A type of governmental unit that is the primary
governmental or administrative subdivision of a county. MCDs are identified by a
variety of terms, such as town (in 8 states), township, and/or district, and include both
functioning and nonfunctioning governmental entities.
Noncity-style address – An address that does not have a house number and/or street
name or may not include a complete house number and street name address. This
includes rural route and box number address and highway contract route addresses, etc.,
which may include a box number, post office boxes and drawers, and general delivery.
Occupied housing unit – A housing unit is classified as occupied if it is the usual place
of residence of the individual or group of persons living in it at the time of enumeration
or if the occupants are only temporarily absent; for example, away on vacation.
Occupied rooms or suites of rooms in hotels, motels, and similar places are classified as
housing units only when occupied by permanent residents, that is, individuals for whom
the facility is their usual place of residence.
Place – A concentration of population either legally bound as an incorporated place
or identified by the Census Bureau as a census designated place.
Regional Office – One of 12 permanent Census Bureau offices responsible for the
Census Bureau’s office and field operations within its region.
Shapefile – Data set used to represent geographic features such as streets and
boundaries. Shapefiles can represent point, line, or area features and require GIS or
mapping software.
83

Glossary

Street segment – The portion of a street or road between two features that intersect that
street or road, such as, other streets or roads, railroad tracks, streams, and governmental
unit boundaries. The Census Bureau records the known address ranges for every street
segment with city-style addresses.
Structure Point – A dot on a Census Bureau map, used to show the location of
one or more living quarters. 4-digit number plus 1-digit alpha character assigned
within a census block to each structure point. Structure points are stored in the
TIGER® database.
®

Topologically Integrated Geographic Encoding and Referencing (TIGER ) – A
computer database that contains a digital representation of all map features (streets,
roads, rivers, railroads, lakes, and so forth) required to support Census Bureau
operations, the related attributes for each, and the geographic identification codes for all
entities used by the Census Bureau to tabulate data for the United States, Puerto Rico,
and Island Areas.
Vacant housing unit – A habitable structure containing living quarters that is not
occupied. New housing units not yet occupied are classified as vacant housing units if
construction has reached a point where exterior windows and doors are installed and final
usable floors and a roof are in place. Vacant units are excluded if open to the elements,
or if there is positive evidence, such as a sign on the house, that the housing unit is to be
demolished or has been condemned.

Glossary

Index
correcting street names, 45
deleting streets, 47
index sheets, 40
information, 40
inset sheet, 40
parent sheets.
sample, 41
Census tract. See also census tract number
defined, 10, 81
Census tract number. See also census tract, See
also census tract
defined, 10, 81
Chief executive/highest elected official
defined, 81
invitation, 1
City-style address. See house number and street
name addresses, See house number and street
name addresses
defined, 1, 9, 81
Confidentiality
defined, 81
Correcting addresses
C action code, 29

A
Action codes
A action code, 27–29
adding addresses, 27–29
C action code, 29–33
correcting addresses, 29–33
deleting addresses, 33
J action code, 34
N action code, 34
nonresidential addresses, 34
not in your jurisdiction addresses, 34
Address control file 1990, 2
defined, 2
Address count list
file name, 15
file record layout, 25
pipe-delimited file example, 26
reviewing and editing, 36
saving, 37
Address list
entity ID codes, 17
file format, 18
file name, 15
opening files, 18
pipe-delimited file city-style example, 22
pipe-delimited noncity-style example, 23
protecting, 13
restricting access, 14–15
software requirements, 17
Title 13, 64
Address range
in TIGER, 3
Address types, 9
nonresidential, 9
residential, 9

D
Deleting addresses
D action code, 33
Delivery sequence file (DSF), 2
Disclosure notice, 62

F
Feature
defined, 81

G
Governmental unit
defined, 82
Group quarters
acceptable types, 8
defined, 8, 82
flag, 28
unacceptable types, 8

B
Block number
defined, 80
Boundary
defined, 80

C
H

Census address list improvement act of 1994, 2
Census block
defined, 10, 80
Census Bureau
responsibilities, 3
Census Bureau paper map
adding streets, 44
correcting street location, 46

House number and street name addresses, 9
Housing unit
acceptable, 7
defined, 7, 82
unacceptable types, 8

Index

Legal boundary
defined, 82
Liaison
chief-executive/highest elected official, 81
defined, 83
Local address list
sources, 12
LUCA program
destroying title 13 materials, 63
explained, 1
return title 13 materials, 62–63
schedule, 5
shipping materials, 61
training, 5
LUCA program address list
saving the file, 35

Occupied housing unit
defined, 83

P
Participant responsibilities, 4
Pipe-delimited file
address count list, 26
address list city-style example, 22
address list noncity-style example, 23
defined, 17
saving, 35

R
Return or destruction of title 13 materials form,
62, 79

Map sheet to block number relationship list, 42
example, 43
Master address file (MAF)
creation, 2
defined, 83
Minor civil division. See legal boundary

Shapefile
defined, 83
submitting feature information, 49
Software requirements, 17
Strategies for review, 11
Structure point
confidential, 64
defined, 84
Title 13, 64
Structure points
feedback, 13
LUCA review, 13

N
Noncity-style address
defined, 9, 83
mailing addresses, 9
Non-house number and street name addresses.
See non-city style addresses
Nonresidential addresses, 9
N action code, 34
Not in your jurisdiction addresses
J action code, 34

T
Topologically integrated geographic encoding
®
and referencing. See also TIGER/Line file
defined, 84

Index

Census Bureau Regional Offices
Contact Information
Atlanta Regional Office

Detroit Regional Office

101 Marietta Street, N.W. ,Ste. 3200

1395 Brewery Park Boulevard

Atlanta, GA 30303-2700

Detroit, MI 48207

(404) 730-3832

(313) 259-1158

FAX: (404) 730-3835

Fax: (313) 259-5772

E-mail:

[email protected]

Boston Regional Office

Kansas City Regional Office

4 Copley Place, Ste. 301

1211 North 8th Street

P.O. Box 9108

Kansas City, KS 66101-2129

Boston, MA 02117-9108

(913) 551-6728

(617) 424-4501

Fax: (913) 551-6789

FAX: (617) 424-0547

E-mail:

Email:

[email protected]

[email protected]
Charlotte Regional Office

Los Angeles Regional Office

901 Center Park Drive, Ste. 106

15350 Sherman Way, Ste. 300

Charlotte, NC 28217-2935

Van Nuys, CA 91406

(704) 424-6400

(818) 904-6393

Fax: (704) 424-6944

Fax: (818) 904-6427

E-mail:

[email protected]

Chicago Regional Office

New York Regional Office

1111 W. 22nd Street, Ste. 400

395 Hudson Street, Ste. 800

Oak Brook, IL 60523-1918

New York, NY 10014

(630) 288-9200

(212) 584-3400

Fax: (630) 288-9288

Fax: (212) 478-4800

E-mail:

[email protected]

Dallas Regional Office

Philadelphia Regional Office

8585 N Stemmons Freeway, Ste. 800S

833 Chestnut Street, Ste. 504

Dallas, TX 75247

Philadelphia, PA 19107-4405

(214) 253-4401

(215) 717-1800

Fax: (214) 655-5365

Fax: (215)717-0755

E-mail:

[email protected]

Denver Regional Office

Seattle Regional Office

6900 W. Jefferson Avenue, Ste. 100

601 Union Street, Ste. 3800

Denver, CO 80235-2032

Seattle, WA 98101-1074
(206) 381-6260

(303) 264-0202
Fax: (303) 969-6777
E-mail:
[email protected]

Fax (206) 381-6629
E-mail:
[email protected]

File Type	application/pdf
File Title	CHAPTER 3
Author	Geography Division
File Modified	2007-05-31
File Created	2007-05-31