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2020 Census Apportionment Results
2020 Census Apportionment Results
Apportionment is the process of dividing the 435 memberships, or seats, in the U.S. House of Representatives among the 50 states. At the conclusion of each decennial census, the results are used to calculate the number of seats to which each state is entitled. Each of the 50 states is entitled to a minimum of one seat in the U.S. House of Representatives.
The 2020 Census apportionment population includes the resident population of the 50 states, plus a count of the U.S. military personnel and federal civilian employees living outside the United States (and their dependents living with them) who can be allocated to a home state. The populations of the District of Columbia and Puerto Rico are not included in the apportionment population because they do not have voting seats in the U.S. House of Representatives.
The calculation methods used through most of the 20th century have been based upon the use of a mathematically determined priority listing of states. Adopted by Congress in 1941 and used each census thereafter, the method of equal proportions also results in a listing of the states according to a priority value—calculated by dividing the population of each state by the geometric mean of its current and next seats—that assigns seats 51 through 435. For more information, see Computing Apportionment.
Table 1. Apportionment Population and Number of Representatives by State: 2020 Census
Table 2. Resident Population for the 50 States, the District of Columbia, and Puerto Rico: 2020 Census
Table 3. Overseas Population for the 50 States and the District of Columbia: 2020 Census
Additional Data
Table A. Apportionment Population, Resident Population, and Overseas Population: 2020 Census and 2010 Census
Table B1. Top Ten Runner-Up States to Almost Gain Another Congressional Seat: 2020 Census
Table B2. Additional Apportionment Population Needed for First Runner-Up State to Gain Another Congressional Seat: 1940 to 2020
Table C1. Number of Seats in U.S. House of Representatives by State: 1910 to 2020
Table C2. Apportionment Population and Number of Seats in U.S. House of Representatives by State: 1910 to 2020
Table D1. Number of Seats Gained and Lost in U.S. House of Representatives by State: 2020 Census
Table D2. Number of Seats Gained and Lost in U.S. House of Representatives by State: 2010 Census
Table E. Numeric and Percent Change in Resident Population of the 50 States, the District of Columbia, and Puerto Rico: 2020 Census and 2010 Census
Number of U.S. Military Personnel, Federal Civilian Personnel, and their Dependents in the Overseas Population for the 50 States and the District of Columbia: 2020 Census
Priority Values for 2020 Census Apportionment
Presentation
Visualizations
Visualization
2020 Census: Apportionment of the U.S. House of Representatives
Visualization
2020 Census: 2020 Resident Population
Visualization
2020 Census: Percent Change in Resident Population: 2010 to 2020
Visualization
Historical Apportionment Data Map (Interactive)
This interactive tool enables users to view more than 10 decades of apportionment and population data.
Related Information
Table
Historical Apportionment Data (1910-2020)
Historical apportionment data for the nation and states.
Table
Historical Population Change Data (1910-2020)
Historical population change for the nation and states.
Table
Historical Population Density Data (1910-2020)
Population density for the nation and states.
Congressional Apportionment
Information about congressional apportionment for the current and past Decennial Censuses.
Related News
Press Kit
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
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.
Related Information
Page Last Revised - April 9, 2024
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