The United States Census Bureau released its post-2020 census apportionment counts on April 26, 2021. Apportionment is the process whereby the 435 districts in the U.S. House of Representatives are allotted to the states on the basis of population.

Six states gained seats. Texas gained two, while Colorado, Florida, Montana, North Carolina, and Oregon gained one each. Seven states—California, Illinois, Michigan, New York, Ohio, Pennsylvania, and West Virginia—each lost a seat.