Decennial Census of Population and Housing by Decades

2020 Census Results

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 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.

The apportionment results and redistricting data are now available. Learn about plans to release more detailed results on the About 2020 Census Data Products page.

Return to 2020 Census page

Protecting the Data

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.

Data Releases

Table | October 28, 2021

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.

Table | October 28, 2021

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.

Table | October 28, 2021

2020 Island Areas Censuses: Guam

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

Table | October 28, 2021

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.

September 16, 2021 | CRVRDO

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.

Table | April 26, 2021

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.

About the Data Quality

The 2020 Census has numerous quality checks built into data collection and data processing. After the data are released, we continue to do an even deeper dive to evaluate the quality of the census in two major ways:

Looking at how well we conducted the census.
Comparing the census results to other ways of measuring the population, such as Demographic Analysis and Post-Enumeration Surveys.

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.

Supporting Products

These products are the geographic framework that supports the official P.L. 94-171 Redistricting Data. These products include maps, geographic information system files (shapefiles), and tabular data.

P.L. 94-171 Redistricting Geographic Support Products

Blog Posts

Random Samplings Blog | December 16, 2021 | Written By: Timothy Kennel, Assistant Division Chief for Statistical Methods, Decennial Statistical Studies Division

The Post-Enumeration Survey: Measuring Coverage Error

Although we undertake extensive efforts to accurately count everyone in the decennial census, sometimes people are missed or duplicated.

Random Samplings Blog | December 15, 2021 | Written by: Matthew Frates, Chief, Count Question Resolution Branch

Understanding the Count Question Resolution Operation

Since the 1990 Census, we’ve given tribal, state and local governments the opportunity to request a review of their once-a-decade census counts.

Random Samplings Blog | November 09, 2021 | Written by: Eric Jensen and Sandra Johnson, Population Division

Using Demographic Benchmarks to Help Evaluate 2020 Census Results

One of the primary methods of evaluating the quality of a census is comparing the results to other population benchmarks.

Random Samplings Blog | September 29, 2021 | Por Cynthia Davis Hollingsworth, gerente de programa de Productos de Datos y Diseminación del Censo del 2020, División de Gestión del Censo Decenal; Jason Devine, subjefe de división de Programas del Censo, División de Población

Próximos productos de datos del Censo del 2020

Este blog describe los planes actuales para los productos de datos del Censo del 2020 y cómo proporcionar comentarios

Random Samplings Blog | September 29, 2021 | By Cynthia Davis Hollingsworth, Program Manager for 2020 Census Data Products and Dissemination, Decennial Census Management Division; Jason Devine, Assistant Division Chief for Census Programs, Population Division

Upcoming 2020 Census Data Products

We’ve now released the apportionment counts and redistricting data — the first two waves of 2020 Census results. But we’re just getting started.

View All Blog Posts

Additional Information

Releasing the Count

Release schedules, data product guides, and other materials related to the release phase of the 2020 Census.

December 30, 2021

What to Consider if You Find an Unexpected Census Result

Overall, 2020 Census redistricting data are comparable to population benchmarks. If you find a result you did not expect, there are several things to consider.

About 2020 Census Data Products

Information on 2020 Census results, including more detailed population and household statistics.

2020 Island Areas Censuses Data Products

The 2020 Census counted people living in the U.S. Island Areas using a long-form questionnaire.

Press Kit | February 22, 2021

2020 Census Apportionment Counts Press Kit

The U.S. Census Bureau will release the congressional apportionment population counts and number of representatives for each of the 50 states.

Press Kit | August 12, 2021

2020 Census Redistricting Data Files Press Kit

States may use these data on race, Hispanic origin, and the voting-age population to redraw electoral district boundaries.

Press Kit | January 07, 2021

2020 Census Quality and Data Processing Press Kit

The Census Bureau is processing responses and assessing quality as we work toward releasing the 2020 Census results.

Last Revised: October 28, 2021

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