Congressional districts in the United States are electoral divisions for the purpose of electing members of the United States House of Representatives. The number of voting seats within the House of Representatives is currently set at 435, with each one representing an average of 761,169 people following the 2020 United States census. The number of voting seats has applied since 1913, excluding a temporary increase to 437 after the admissions of Alaska and Hawaii. The total number of state members is capped by the Reapportionment Act of 1929. In addition, each of the five inhabited U.S. territories and the federal district of Washington, D. C., sends a non-voting delegate to the House of Representatives. The Bureau of the Census conducts a constitutionally mandated decennial census whose figures are used to determine the number of congressional districts to which each state is entitled, in a process called "apportionment". The 2022 elections were the first to be based on the congressional districts which were defined based on the 2020 United States census. Each state is responsible for the redistricting of districts within their state, while several states have one "at-large" division. Redistricting must take place if the number of members changes following a re-apportionment, or may take place at any other time if demographics represented in a district have changed substantially. Setting the boundaries of states' congressional districts is the responsibility of state governments, who often gerrymander districts for various reasons. Districts may sometimes retain the same boundaries, while changing their district numbers. The following is a complete list of the 435 current congressional districts for the House of Representatives, and over 200 obsolete districts, and the six current and one obsolete non-voting delegations.

Extremes

Population

Area

Oldest district

American Human Development Index

Cook Partisan Voting Index

Alabama

Alaska

American Samoa

See Non-voting delegations, below.

Arizona

Arkansas

California

Colorado

Connecticut

Delaware

The oldest district in the country, it has never changed its shape or size. From 1813 to 1823, Delaware had two representatives — both chosen at-large on a general ticket from the same statewide district.

District of Columbia

See Non-voting delegations, below.

Florida

Georgia

Guam

See Non-voting delegations, below.

Hawaii

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Until 1820, Maine was part of Massachusetts. After the 1810 census, Massachusetts was allocated 20 districts. Seven Massachusetts districts (then numbered MA's 14th congressional district through MA's 20th congressional district) were credited to Maine soon after it became a state in 1820. See District of Maine.

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Montana

Nebraska

Nevada

New Hampshire

New Jersey

New Mexico

New York

North Carolina

North Dakota

Northern Mariana Islands

Ohio

Oklahoma

Oregon

Pennsylvania

Philippines

Puerto Rico

Rhode Island

South Carolina

South Dakota

Tennessee

Texas

U.S. Virgin Islands

Utah

Vermont

Virginia

Washington

West Virginia

Wisconsin

Wyoming

Non-voting delegations

List of districts by area

The list includes the 435 voting districts of the 119th United States Congress, effective from 2025 to 2027.

Comparisons