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2020 U.S. Census Apportionment Results

From Census.gov - Apportionment is the process of dividing the 435 seats in the U.S. House of Representatives among the 50 states. The results of the census are used to determine the number of seats each state is entitled to, with each state being entitled to a minimum of one seat in the U.S. House of Representatives by default.


Adopted by Congress in 1941 and used for every U.S. census ever since, the method of equal proportions 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.


The last U.S. census prior to the 2020 census was conducted in 2010; thus, the following data indicates the number of seats a state has lost or gained upon completion of the 2020 census:

  • California: lost 1 seat

  • Colorado: gained 1 seat

  • Florida: gained 1 seat

  • Illinois: lost 1 seat

  • Michigan: lost 1 seat

  • Montana: gained 1 seat

  • New York: lost 1 seat

  • North Carolina: gained 1 seat

  • Ohio: lost 1 seat

  • Oregon: gained 1 seat

  • Pennsylvania: lost 1 seat

  • Texas: gained 2 seats

  • West Virginia: lost 1 seat


The following states have the most seats in the House of Representatives upon completion of the 2020 census:

  • California: 52 seats

  • Texas: 38 seats

  • Florida: 28 seats

  • New York: 26 seats

  • Illinois: 17 seats

  • Pennsylvania: 17 seats

  • Ohio: 15 seats

  • Georgia: 14 seats

  • North Carolina: 14 seats

  • Michigan: 13 seats

  • New Jersey: 12 seats

  • Washington: 10 states


The following states have the least amount of seats in the House of Representatives with only one seat per state upon completion of the 2020 census:

  • Alaska

  • Delaware

  • North Dakota

  • South Dakota

  • Vermont

  • Wyoming

The following states saw the greatest increase in population size by percent from the 2010 census to the 2020 census:

  • Utah: 18.4% population increase

  • Idaho: 17.4% population increase

  • Texas: 15.9% population increase

  • North Dakota: 15.8% population increase

  • Nevada: 15% population increase

  • Colorado 14.8% population increase

  • Florida: 14.6% population increase

  • Washington: 14.6% population increase

  • Arizona: 11.9% population increase

  • South Carolina: 10.7% population increase

  • Georgia: 10.6% population increase

  • Oregon: 10.6% population increase

  • Delaware: 10.2% population increase

The following states saw a decrease in population size by percent from the 2010 census to the 2020 census:

  • West Virginia: 3.2% population decrease

  • Mississippi: 0.2% population decrease

  • Illinois: 0.1% population decrease


Image from Woodstockil.gov

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