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Helpful Links

QuickFacts U.S. Data Finder Advanced Data Search International Database (IDB) American Community Survey (ACS) Census Records & Genealogy

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Access demographic, economic and population data from the U.S. Census Bureau. Explore census data with visualizations and view tutorials.

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Our surveys provide periodic and comprehensive statistics about the nation. This data is critical for government programs, policies, and decision-making.

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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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Data & Maps

Surveys & Programs

Resource Library

Partners Researchers Educators Survey Respondents

News NAICS Codes Jobs About Us Contact Us Help

View All Topics and Subtopics Index A to Z

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

Explore data on data.census.gov View all data resources

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

Survey Help View all Surveys & Programs

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)

View all library resources Glossary

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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Technical Documentation

Technical Documentation

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Within Technical Documentation

Comparisons With Other Surveys
Methodology
Questionnaires and Instructions

Within Technical Documentation

Comparisons With Other Surveys
Methodology
Questionnaires and Instructions

Technical Documentation

Every census, survey, and program has technical documentation to assist users with the published statistics.

Methodology

January 16, 2020

The methods we use to collect and produce ACES including sampling, questions, collection, review, quality, weighting, etc.
Comparisons With Other Surveys

Data users are cautioned to review technical information from each data source before making comparisons of the estimates.
Questionnaires and Instructions

Every census and survey has documents to assist users with the published stats. These may include codebooks, definitions, errata, methodology, user notes, etc.