2010 Census: Apportionment of the U.S. House of Representatives Map
2010 Census: Apportionment of the U.S. House of Representatives Map
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 House memberships to which each state is entitled. These maps show the changes to the number of Congressional seats for each state between apportionment based on the 2000 Census and apportionment based on the 2010 Census.
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Related Information
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Table2010 Census Apportionment ResultsCongressional seats were apportioned among the 50 states based on the 2010 Census population counts. Apportionment results from 1790 to 2010 are also shown.
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TableHistorical Apportionment Data (1910-2020)Historical apportionment data for the nation and states.
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Decennial Census of Population and Housing VisualizationsData made visual with charts, tables, maps, and other graphic elements. They are often interactive and contain text for labeling, not narration.
Sources and Reference
2010 Decennial Census
Page Last Revised - March 20, 2023