2020 Census Apportionment Results

Congressional seats were apportioned among the 50 states based on the 2020 Census population counts. Apportionment results from 1790 to 2020 are also shown.

Decennial Census P.L. 94-171 Redistricting Data Summary Files

Includes the official data, documentation, and support materials to assist in accessing P.L. 94-171 Redistricting Data.

2020 Census 118th Congressional District Summary File

The DHC provides detailed data on topics including: age, sex, race, Hispanic or Latino origin, families and households, housing, and group quarters populations.

2020 Census Demographic Profile

The Demographic Profile provides an overview of demographic and housing characteristics for a specific geography, all in one table.

2020 Census Demographic and Housing Characteristics File (DHC)

The DHC provides detailed data on topics including: age, sex, race, Hispanic or Latino origin, families and households, housing, and group quarters populations.

2020 Census Detailed Demographic and Housing Characteristics File A (Detailed DHC-A)

The Detailed DHC-A provides population counts and sex-by-age statistics for race and ethnic groups and American Indian and Alaska Native tribes and villages.

2020 Island Areas Censuses: American Samoa

The 2020 Census of American Samoa collected detailed demographic, social, economic, and housing characteristics using a long-form questionnaire.

2020 Island Areas Censuses: Commonwealth of the Northern Mariana Islands (CNMI)

The 2020 Census of CNMI collected detailed demographic, social, economic, and housing characteristics using a long-form questionnaire.

2020 Island Areas Censuses: Guam

The 2020 Census of Guam collected detailed demographic, social, economic, and housing characteristics using a long-form questionnaire.

2020 Island Areas Censuses: U.S. Virgin Islands

The 2020 Census of the U.S. Virgin Islands collected detailed demographic, social, economic, and housing characteristics using a long-form questionnaire.

How the Census Bureau Protects Your Data

Learn how we keep your personal information safe as we process 2020 Census responses.

Disclosure Avoidance Modernization

All 2020 Census data products (with the exception of the apportionment data) will be protected with a new, modernized disclosure avoidance system.

2020 Census Data Quality

We check the quality of our work every step of the way. When we release data, we make sure they meet our quality standards.

P.L. 94-171 Redistricting Geographic Support Products

Understanding Hard-to-Count and Historically Undercounted Populations

In a world driven by data, accurate population counts form the foundation for informed decision-making.

Data Quality and the Detailed DHC File A

Today the Census Bureau released new statistics about our nation’s communities, providing population counts and sex-by-age statistics.

What You Should Know About the Upcoming Detailed DHC File A

The upcoming 2020 Census Detailed DHC-A greatly expands what we know about the racial and ethnic composition of the U.S. population.

Exploring the Racial and Ethnic Diversity of Various Age Groups

The 2020 Census showed that while the population under 5 years was the nation’s most racially and ethnically diverse age group, variation existed among states.

Age Heaping in the 2020 Census Demographic and Housing Characteristics File (DHC)

While age heaping is an issue in all decennial census and household survey data, the 2020 Census shows patterns of age heaping that are more pronounced.