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Census Academy Combining Data Data Tools and Apps Datasets Developers Experimental Data Products Interactive Maps Mapping Files Profiles Related Sites Software Tables Training and Workshops Visualizations
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2020 Census 2026 Census Test 2030 Census American Community Survey (ACS) American Housing Survey (AHS) Annual Business Survey (ABS) Annual Integrated Economic Survey (AIES) County Business Patterns (CBP) Current Population Survey (CPS) Economic Census Household Pulse Survey International Programs Metro and Micro Areas Population Estimates Population Projections Small Area Income and Poverty Statistics of U.S. Businesses Survey of Income and Program Participation (SIPP)
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America Counts: Stories Audio Blogs By the Numbers Facts for Features Fact Sheets Infographics and Visualizations Photos Publications Spotlights Stats for Stories Training (Census Academy) Videos Working Papers

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Block Assignment Files

2010 Census Block Assignment Files

BAFs have been created for each of the 50 states, the District of Columbia, and Puerto Rico.  Each file contains 2010 Census tabulation block codes and geographic area codes for a specific geographic entity type.  Each BAF contains every block within the given state, even if the block is not within one of the geographic areas represented in the file.  For those blocks where no geographic area is present, the block is listed, followed by one or more commas (depending on the file layout for the specific geographic area type).

Page Last Revised - October 8, 2021
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