Boundary and Annexation Survey (BAS)

The BAS updates incorporated place boundaries, minor civil divisions, counties, and the federally recognized American Indian areas inventory for compliance with responsibilities specified in the Office of Management and Budget (OMB) Circular A-16, Governmental Units and Administrative and Statistical Boundaries Data Theme. Alaska Native Regional Corporations will be updated through the 2020 Census Participant Statistical Areas Program. BAS supports the spatial data steward responsibilities of the OMB E-Gov, Data.gov, The National Map, and updates to the Geographic Names Information Systems. The results of the BAS are needed to provide information documenting the creation of newly incorporated places, minor civil divisions, counties, federally recognized American Indian Areas (including American Indian reservations, and off-reservation trust lands). BAS also includes the dissolution of incorporated places and minor civil divisions, and changes in the boundaries of incorporated places, minor civil divisions, counties, and American Indian Areas. BAS information provides an appropriate record for reporting the results of the economic censuses, decennial census, economic census, the Population Estimates Program, and surveys such as the American Community Survey.

The latest form for Boundary and Annexation Survey (BAS) expires 2021-11-30 and can be found here.

Boundary and Annexation Survey

Federal Enterprise Architecture: General Government - Central Records & Statistical Mgt

Review document collections for all forms, instructions, and supporting documents - including paper/printable forms.