Boundary and Annexation Survey

DC

BAS-9L
(9-2017)

UNITED STATES DEPARTMENT OF COMMERCE
Economics and Statistics Administration

U.S. Census Bureau
Washington, DC 20233-0001
OFFICE OF THE DIRECTOR

A Message from the Director, U.S. Census Bureau...
The U.S. Census Bureau (Census Bureau) conducts the Boundary and Annexation Survey (BAS)
to update our records regarding changes to legal boundaries, names, and governmental status of
all governmental units effective on or before January 1 of the survey year. This voluntary survey
is an important opportunity for you to ensure that we have the correct boundary and legal name
for your government. The Census Bureau will use the boundary information you provide to report
data from Census Bureau programs and surveys.
Enclosed are materials you requested to report boundary changes.
Please keep these dates in mind when returning your submission.
KEY DATES
January 1, 2018

All boundary changes must be legally in effect on or before this date to be
reported under the BAS 2018.

March 1, 2018

BAS submission date deadline for boundary updates to be reflected in the
American Community Survey (ACS) and Population Estimates Program
(PEP) published data. Boundary submissions received by this date are also
reflected in next year’s BAS materials.

May 31, 2018

BAS submission date deadline for boundary updates to be reflected in next
year’s BAS materials. Submissions after this date are not guaranteed to be
reflected in next year’s BAS materials.
The Census Bureau will attempt to include submitted street and landmark
updates as resources permit.

Please note that your response to the BAS does not replace any state or county reporting
requirements. Visit https://www.census.gov/programs-surveys/bas/information/state-agreements.html
for state reporting requirements.
The Census Bureau appreciates your response to this important voluntary survey. If you need any
assistance with this request, please email , telephone 1–800–972–5651, or
visit https://www.census.gov/geo/partnerships/bas.html
Enclosures

census.gov