Boundary and Annexation Survey

The Boundary and Annexation Survey (BAS) & Boundary Validation Program (BVP)

2021BAS-E-1L

Boundary and Annexation Survey

OMB: 0607-0151

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E-mail: BAS 1L  and Text
Subject: YYYY Boundary and Annexation Survey (BAS)- BAS ID: 


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The U.S. Census Bureau is now conducting the Boundary and Annexation Survey (BAS). Do not miss your
opportunity to participate in the BAS to ensure that the Census Bureau has current and accurate
boundary, legal name, and status information for your government.
The BAS is a voluntary survey. We strongly encourage your participation in the BAS for the following
reasons:
•

Boundary updates complete the Census Bureau’s geographic framework for data collection,
tabulation, and dissemination, and are vital to the success of the decennial census, the
American Community Survey (ACS), Population Estimates Program (PEP), and many other
censuses and surveys.

•

The federal government allocates more than $675 billion in federal funds annually for health,
welfare, infrastructure, education, and other federal programs and services.

•

Responding to the BAS ensures that your local government receives the funds for which it is
entitled and has the best data available for its decision-making processes.

Action Step:
•

Respond to the BAS. On the BAS website, you will find step-by-step instructions on how to start
the boundary updating process and respond to the BAS.
NOTE: Please respond to the BAS with a “No Changes” response if you have no boundary or
contact updates to report for your government. If you do not respond, we will contact your
government to confirm your boundary change status.
Click here to go to the BAS website
TRAINING OPPORTUNITIES

The Census Bureau is offering training webinars for the BAS. The webinar schedule and registration
instructions are on the BAS Webinars webpage.

KEY DATES
January 1

Boundary updates must be legally in effect on or before this date to be reported in the
current survey year.

March 1

Boundary updates returned by this date will be reflected in the ACS and PEP data and in
next year’s BAS materials.

May 31

Boundary updates returned by this date will be reflected in next year’s BAS materials.
CONTACT INFORMATION

Email: 
Phone: 1-800-972-5651
Website: 
Thank you for your participation in the BAS.


File Typeapplication/pdf
File TitleEmail: BAS 1L
AuthorU.S. Census Bureau
File Modified2020-12-07
File Created2020-12-07

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