2012 Boundary and Annexation Survey (BAS): BAS Codes

All federally recognized American Indian areas (AIA), governmental counties (and equivalent areas), incorporated places, consolidated cities, and governmental Minor Civil Divisions (MCDs) are assigned and identified by a unique BAS code.

Please use the links below to determine the BAS code for your governmental unit.

American Indian Area Names and BAS codes [Excel] [Text]
Names and BAS Codes [Excel] [Text]
BAS Entities Summarized by State & Type (County, Place, MCD)

BAS Main Page

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