Boundary and Annexation Survey

BAS-9L
OMB Control No.: 0671-0151
Expiration Date: 11-30-2021

A Message from the Director, U.S. Census Bureau:
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.

Enclosed are materials you requested to report boundary changes.
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.

census.gov

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

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