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Age and Sex Business and Economy Education Emergency Management / Disasters Employment Families and Living Arrangements Geography Health Hispanic Origin Housing Income and Poverty International Trade Migration/Geographic Mobility Population Population Estimates Public Sector Race Redistricting Research Voting and Registration

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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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Within Technical Documentation

Combined Technical Documentation
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Errata Notes
File Naming Conventions
Geographic Boundary Change Notes
Geographic Codes
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User Notes

User Notes

These user notes describe corrections, errata, known errors, or situations that users of our data products should be aware of.

TIGER/Line Files and Shapefiles Errata and User Notes
Gazetteer File User Notes

User notes for the Gazetteer Files.
Errata Note

2010 Census Geography Notes and Errata

January 01, 2010

View the available Geography Notes and Errata for the 2010 Census.
User Notes

Special Characters Not Displaying (character encoding)

Special characters may not correctly display in all systems due to character encoding differences.
Congressional and State Legislative Districts in Geographic Products

Note on the congressional and state legislative district boundaries in geographic products during the 2020 Census processing.
2020 Census Public Use Microdata Area User Notes

User Notes for the 2020 Census Public Use Microdata Areas (PUMAs).