UNITED STATES DEPARTMENT OF COMMERCE 
Economics and Statistics Administration

BAS-10(L)

U.S. Census Bureau 
(9-2012) 

Washington, DC 20233-0001 
OFFICE OF THE DIRECTOR 

FROM THE DIRECTOR 

U.S. CENSUS BUREAU 
The U.S. Census Bureau conducts the Boundary and Annexation Survey (BAS) to update 
our records regarding changes to legal boundaries, names, and 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 jurisdiction. The Census Bureau will use the boundary information you provide to 
report data from the Population Estimates Program (PEP), the American Community 
Survey (ACS), and other Census programs and surveys. 

The enclosed checklist contains information about the materials in your BAS package. 
These materials reflect the response method that your jurisdiction previously requested. 
Information describing how to update the enclosed materials is available in the BAS 
Respondent Guide. This information is also provided on the BAS Web site at 
<http://www.census.gov/geo/www/bas/bashome.html>. 

All annexations received by March 1 will be included in this year’s boundary delivery for 
the PEP and the ACS. All annexation and boundary corrections received by May 31 will be 
included in your BAS materials for next year. The Census Bureau will attempt to include 
street and landmark updates as resources permit. Please note that your response to the 
BAS does not replace any state or county reporting requirement. 

The Census Bureau appreciates your response to this important voluntary survey. If you 
need any assistance with this request, please e-mail <geo.bas@census.gov>, telephone 
1–800–972–5651, or visit our Web site at <http://www.census.gov/geo/www/bas/bashome.html>. 

Sincerely, 

Thomas L. Mesenbourg, Jr. 
Acting Director 

Enclosures 


census.gov