List of United States congressional districts



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 in 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.

Population

 * Average population: 761,169 people based on 2020 U.S. census. It was 708,377 in 2010.
 * State with the most people in the average district: Delaware (989,948). In 2010, Montana: 994,416.
 * State with the fewest people in the average district: Montana (542,113). In 2010, Rhode Island: 527,624.
 * District with the most people: Delaware's at-large congressional district (989,948). In 2010, Montana's at-large congressional district: 994,416.
 * District with the fewest people: RI's 1st congressional district (545,085). In 2010, also RI's 1st congressional district: 526,283.

Area

 * District with the greatest area: Alaska's at-large congressional district, same as in 2010.
 * District with the greatest area that comprises less than an entire state: Montana's 2nd congressional district. In 2010: New Mexico's 2nd congressional district.
 * District with the smallest area: New York's 12th congressional district. In 2010: New York's 13th congressional district.

Oldest district

 * Delaware's at-large congressional district, same geographical borders since 1789.

American Human Development Index

 * District with the highest American Human Development Index score: California's 18th congressional district.
 * District with the lowest American Human Development Index score: New York's 15th congressional district.

Alabama



 * Alabama Territory's at-large congressional district: 1818–1819 (obsolete since statehood)
 * Alabama's at-large congressional district: 1819–1823, 1841–1843, 1873–1877, 1913–1917, 1963–1965 (obsolete)
 * Alabama's 1st congressional district: 1823–1841, 1843–1963, 1965–present
 * Alabama's 2nd congressional district: 1823–1841, 1843–1963, 1965–present
 * Alabama's 3rd congressional district: 1823–1841, 1843–1963, 1965–present
 * Alabama's 4th congressional district: 1833–1841, 1843–1963, 1965–present
 * Alabama's 5th congressional district: 1833–1841, 1843–1963, 1965–present
 * Alabama's 6th congressional district: 1843–1963, 1965–present
 * Alabama's 7th congressional district: 1843–1863, 1877–1963, 1965–present
 * Alabama's 8th congressional district: 1877–1963, 1965–1973 (obsolete since the 1970 census)
 * Alabama's 9th congressional district: 1893–1963 (obsolete since the 1960 census)
 * Alabama's 10th congressional district: 1917–1933 (obsolete since the 1930 census)

Alaska

 * Alaska Territory's at-large congressional district: 1906–1959 (obsolete since statehood)
 * Alaska's at-large congressional district: 1959–present

American Samoa
See Non-voting delegations, below.

Arizona



 * Arizona Territory's at-large congressional district: 1863–1912 (obsolete since statehood)
 * Arizona's at-large congressional district: 1912–1949 (obsolete)
 * Arizona's 1st congressional district: 1949–present
 * Arizona's 2nd congressional district: 1949–present
 * Arizona's 3rd congressional district: 1963–present
 * Arizona's 4th congressional district: 1973–present
 * Arizona's 5th congressional district: 1983–present
 * Arizona's 6th congressional district: 1993–present
 * Arizona's 7th congressional district: 2003–present
 * Arizona's 8th congressional district: 2003–present
 * Arizona's 9th congressional district: 2013–present

Arkansas



 * Arkansas Territory's at-large congressional district: 1819–1836 (obsolete since statehood)
 * Arkansas's at-large congressional district: 1836–1853, 1873–1875, 1883–1885 (obsolete)
 * Arkansas's 1st congressional district: 1853–present
 * Arkansas's 2nd congressional district: 1853–present
 * Arkansas's 3rd congressional district: 1863–present
 * Arkansas's 4th congressional district: 1875–present
 * Arkansas's 5th congressional district: 1885–1963 (obsolete since the 1960 census)
 * Arkansas's 6th congressional district: 1893–1963 (obsolete since the 1960 census)
 * Arkansas's 7th congressional district: 1903–1953 (obsolete since the 1950 census)

California



 * California's at-large congressional district: 1849–1865, 1883–1885 (obsolete)
 * California's 1st congressional district: 1865–present
 * California's 2nd congressional district: 1865–present
 * California's 3rd congressional district: 1865–present
 * California's 4th congressional district: 1873–present
 * California's 5th congressional district: 1885–present
 * California's 6th congressional district: 1885–present
 * California's 7th congressional district: 1893–present
 * California's 8th congressional district: 1903–present
 * California's 9th congressional district: 1913–present
 * California's 10th congressional district: 1913–present
 * California's 11th congressional district: 1913–present
 * California's 12th congressional district: 1933–present
 * California's 13th congressional district: 1933–present
 * California's 14th congressional district: 1933–present
 * California's 15th congressional district: 1933–present
 * California's 16th congressional district: 1933–present
 * California's 17th congressional district: 1933–present
 * California's 18th congressional district: 1933–present
 * California's 19th congressional district: 1933–present
 * California's 20th congressional district: 1933–present
 * California's 21st congressional district: 1943–present
 * California's 22nd congressional district: 1943–present
 * California's 23rd congressional district: 1943–present
 * California's 24th congressional district: 1953–present
 * California's 25th congressional district: 1953–present
 * California's 26th congressional district: 1953–present
 * California's 27th congressional district: 1953–present
 * California's 28th congressional district: 1953–present
 * California's 29th congressional district: 1953–present
 * California's 30th congressional district: 1953–present
 * California's 31st congressional district: 1963–present
 * California's 32nd congressional district: 1963–present
 * California's 33rd congressional district: 1963–present
 * California's 34th congressional district: 1963–present
 * California's 35th congressional district: 1963–present
 * California's 36th congressional district: 1963–present
 * California's 37th congressional district: 1963–present
 * California's 38th congressional district: 1963–present
 * California's 39th congressional district: 1973–present
 * California's 40th congressional district: 1973–present
 * California's 41st congressional district: 1973–present
 * California's 42nd congressional district: 1973–present
 * California's 43rd congressional district: 1973–present
 * California's 44th congressional district: 1983–present
 * California's 45th congressional district: 1983–present
 * California's 46th congressional district: 1993–present
 * California's 47th congressional district: 1993–present
 * California's 48th congressional district: 1993–present
 * California's 49th congressional district: 1993–present
 * California's 50th congressional district: 1993–present
 * California's 51st congressional district: 1993–present
 * California's 52nd congressional district: 1993–present
 * California's 53rd congressional district: 2003–2023 (obsolete due to the 2020 census)

Colorado



 * Colorado Territory's at-large congressional district: 1861–1876 (obsolete since statehood)
 * Colorado's at-large congressional district: 1876–1893, 1903–1915 (obsolete)
 * Colorado's 1st congressional district: 1893–present
 * Colorado's 2nd congressional district: 1893–present
 * Colorado's 3rd congressional district: 1915–present
 * Colorado's 4th congressional district: 1915–present
 * Colorado's 5th congressional district: 1973–present
 * Colorado's 6th congressional district: 1983–present
 * Colorado's 7th congressional district: 2003–present
 * Colorado's 8th congressional district: 2023–present

Connecticut



 * Connecticut's at-large congressional district: 1789–1837, 1903–1913, 1933–1965 (obsolete)
 * Connecticut's 1st congressional district: 1837–present
 * Connecticut's 2nd congressional district: 1837–present
 * Connecticut's 3rd congressional district: 1837–present
 * Connecticut's 4th congressional district: 1837–present
 * Connecticut's 5th congressional district: 1837–1843, 1913–present
 * Connecticut's 6th congressional district: 1837–1843, 1965–2003 (obsolete since the 2000 census)

Delaware



 * Delaware's at-large congressional district: 1789–present

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



 * Florida Territory's at-large congressional district: 1822–1845 (obsolete since statehood)
 * Florida's at-large congressional district: 1845–1875, 1913–1915, 1933–1937, 1943–1945 (obsolete)
 * Florida's 1st congressional district: 1875–present
 * Florida's 2nd congressional district: 1875–present
 * Florida's 3rd congressional district: 1903–present
 * Florida's 4th congressional district: 1915–present
 * Florida's 5th congressional district: 1937–present
 * Florida's 6th congressional district: 1945–present
 * Florida's 7th congressional district: 1953–present
 * Florida's 8th congressional district: 1953–present
 * Florida's 9th congressional district: 1963–present
 * Florida's 10th congressional district: 1963–present
 * Florida's 11th congressional district: 1963–present
 * Florida's 12th congressional district: 1963–present
 * Florida's 13th congressional district: 1973–present
 * Florida's 14th congressional district: 1973–present
 * Florida's 15th congressional district: 1973–present
 * Florida's 16th congressional district: 1983–present
 * Florida's 17th congressional district: 1983–present
 * Florida's 18th congressional district: 1983–present
 * Florida's 19th congressional district: 1983–present
 * Florida's 20th congressional district: 1993–present
 * Florida's 21st congressional district: 1993–present
 * Florida's 22nd congressional district: 1993–present
 * Florida's 23rd congressional district: 1993–present
 * Florida's 24th congressional district: 2003–present
 * Florida's 25th congressional district: 2003–present
 * Florida's 26th congressional district: 2013–present
 * Florida's 27th congressional district: 2013–present
 * Florida's 28th congressional district: 2023–present

Georgia



 * Georgia's at-large congressional district: 1793–1827, 1829–1845, 1883–1885 (obsolete)
 * Georgia's 1st congressional district: 1789–1793, 1827–1829, 1845–present
 * Georgia's 2nd congressional district: 1789–1793, 1827–1829, 1845–present
 * Georgia's 3rd congressional district: 1789–1793, 1827–1829, 1845–present
 * Georgia's 4th congressional district: 1827–1829, 1845–present
 * Georgia's 5th congressional district: 1827–1829, 1845–present
 * Georgia's 6th congressional district: 1827–1829, 1845–present
 * Georgia's 7th congressional district: 1827–1829, 1845–present
 * Georgia's 8th congressional district: 1845–1863, 1873–present
 * Georgia's 9th congressional district: 1873–present
 * Georgia's 10th congressional district: 1885–present
 * Georgia's 11th congressional district: 1893–1933, 1993–present
 * Georgia's 12th congressional district: 1913–1933, 2003–present
 * Georgia's 13th congressional district: 2003–present
 * Georgia's 14th congressional district: 2013–present

Guam
See Non-voting delegations, below.

Hawaii



 * Hawaii Territory's at-large congressional district: 1900–1959 (obsolete since statehood)
 * Hawaii's at-large congressional district: 1959–1971 (obsolete)
 * Hawaii's 1st congressional district: 1971–present
 * Hawaii's 2nd congressional district: 1971–present

Idaho



 * Idaho Territory's at-large congressional district: 1864–1890 (obsolete since statehood)
 * Idaho's at-large congressional district: 1890–1919 (obsolete)
 * Idaho's 1st congressional district: 1919–present
 * Idaho's 2nd congressional district: 1919–present

Illinois



 * Illinois Territory's at-large congressional district: 1812–1818 (obsolete since statehood)
 * Illinois's at-large congressional district: 1818–1833, 1863–1873, 1893–1895, 1913–1949 (obsolete)
 * Illinois's 1st congressional district: 1833–present
 * Illinois's 2nd congressional district: 1833–present
 * Illinois's 3rd congressional district: 1833–present
 * Illinois's 4th congressional district: 1843–present
 * Illinois's 5th congressional district: 1843–present
 * Illinois's 6th congressional district: 1843–present
 * Illinois's 7th congressional district: 1843–present
 * Illinois's 8th congressional district: 1853–present
 * Illinois's 9th congressional district: 1853–present
 * Illinois's 10th congressional district: 1863–present
 * Illinois's 11th congressional district: 1863–present
 * Illinois's 12th congressional district: 1863–present
 * Illinois's 13th congressional district: 1863–present
 * Illinois's 14th congressional district: 1873–present
 * Illinois's 15th congressional district: 1873–present
 * Illinois's 16th congressional district: 1873–present
 * Illinois's 17th congressional district: 1873–present
 * Illinois's 18th congressional district: 1873–2023 (obsolete due to the 2020 census)
 * Illinois's 19th congressional district: 1873–2013 (obsolete since the 2010 census)
 * Illinois's 20th congressional district: 1883–2003 (obsolete since the 2000 census)
 * Illinois's 21st congressional district: 1895–1993 (obsolete since the 1990 census)
 * Illinois's 22nd congressional district: 1895–1993 (obsolete since the 1990 census)
 * Illinois's 23rd congressional district: 1903–1983 (obsolete since the 1980 census)
 * Illinois's 24th congressional district: 1903–1983 (obsolete since the 1980 census)
 * Illinois's 25th congressional district: 1903–1963 (obsolete since the 1960 census)
 * Illinois's 26th congressional district: 1949–1953 (obsolete since the 1950 census)

Indiana



 * Indiana Territory's at-large congressional district: 1805–1816 (obsolete since statehood)
 * Indiana's at-large congressional district: 1816–1823, 1873–1875 (obsolete)
 * Indiana's 1st congressional district: 1823–present
 * Indiana's 2nd congressional district: 1823–present
 * Indiana's 3rd congressional district: 1823–present
 * Indiana's 4th congressional district: 1833–present
 * Indiana's 5th congressional district: 1833–present
 * Indiana's 6th congressional district: 1833–present
 * Indiana's 7th congressional district: 1833–present
 * Indiana's 8th congressional district: 1843–present
 * Indiana's 9th congressional district: 1843–present
 * Indiana's 10th congressional district: 1843–2003 (obsolete since the 2000 census)
 * Indiana's 11th congressional district: 1853–1983 (obsolete since the 1980 census)
 * Indiana's 12th congressional district: 1875–1943 (obsolete since the 1940 census)
 * Indiana's 13th congressional district: 1875–1933 (obsolete since the 1930 census)

Iowa



 * Iowa Territory's at-large congressional district: 1838–1846 (obsolete since statehood)
 * Iowa's at-large congressional district: 1846–1847 (obsolete)
 * Iowa's 1st congressional district: 1847–present
 * Iowa's 2nd congressional district: 1847–present
 * Iowa's 3rd congressional district: 1863–present
 * Iowa's 4th congressional district: 1863–present
 * Iowa's 5th congressional district: 1863–2013 (obsolete since the 2010 census)
 * Iowa's 6th congressional district: 1863–1993 (obsolete since the 1990 census)
 * Iowa's 7th congressional district: 1873–1973 (obsolete since the 1970 census)
 * Iowa's 8th congressional district: 1873–1963 (obsolete since the 1960 census)
 * Iowa's 9th congressional district: 1873–1943 (obsolete since the 1940 census)
 * Iowa's 10th congressional district: 1883–1933 (obsolete since the 1930 census)
 * Iowa's 11th congressional district: 1883–1933 (obsolete since the 1930 census)

Kansas



 * Kansas Territory's at-large congressional district: 1854–1861 (obsolete since statehood)
 * Kansas's at-large congressional district: 1861–1875, 1883–1885, 1893–1907 (obsolete)
 * Kansas's 1st congressional district: 1875–present
 * Kansas's 2nd congressional district: 1875–present
 * Kansas's 3rd congressional district: 1875–present
 * Kansas's 4th congressional district: 1885–present
 * Kansas's 5th congressional district: 1885–1993 (obsolete since the 1990 census)
 * Kansas's 6th congressional district: 1885–1963 (obsolete since the 1960 census)
 * Kansas's 7th congressional district: 1885–1943 (obsolete since the 1940 census)
 * Kansas's 8th congressional district: 1907–1933 (obsolete since the 1930 census)

Kentucky



 * Kentucky's at-large congressional district: 1933–1935 (obsolete)
 * Kentucky's 1st congressional district: 1792–1933, 1935–present
 * Kentucky's 2nd congressional district: 1792–1933, 1935–present
 * Kentucky's 3rd congressional district: 1803–1933, 1935–present
 * Kentucky's 4th congressional district: 1803–1933, 1935–present
 * Kentucky's 5th congressional district: 1803–1933, 1935–present
 * Kentucky's 6th congressional district: 1803–1933, 1935–present
 * Kentucky's 7th congressional district: 1813–1933, 1935–1993 (obsolete since the 1990 census)
 * Kentucky's 8th congressional district: 1813–1933, 1935–1963 (obsolete since the 1960 census)
 * Kentucky's 9th congressional district: 1813–1933, 1935–1953 (obsolete since the 1950 census)
 * Kentucky's 10th congressional district: 1813–1863, 1873–1933 (obsolete since the 1930 census)
 * Kentucky's 11th congressional district: 1823–1843, 1883–1933 (obsolete since the 1930 census)
 * Kentucky's 12th congressional district: 1823–1843 (obsolete since the 1840 census)
 * Kentucky's 13th congressional district: 1833–1843 (obsolete since the 1840 census)

Louisiana



 * Orleans Territory's at-large congressional district: 1806–1812 (obsolete since statehood)
 * Louisiana's at-large congressional district: 1812–1823, 1873–1875 (obsolete)
 * Louisiana's 1st congressional district: 1823–present
 * Louisiana's 2nd congressional district: 1823–present
 * Louisiana's 3rd congressional district: 1823–present
 * Louisiana's 4th congressional district: 1843–present
 * Louisiana's 5th congressional district: 1863–present
 * Louisiana's 6th congressional district: 1875–present
 * Louisiana's 7th congressional district: 1903–2013 (obsolete since the 2010 census)
 * Louisiana's 8th congressional district: 1913–1993 (obsolete since the 1990 census)

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.


 * Maine's at-large congressional district: 1820–1821, 1883–1885 (obsolete)
 * Maine's 1st congressional district: 1821–1883, 1885–present
 * Maine's 2nd congressional district: 1821–1883, 1885–present
 * Maine's 3rd congressional district: 1821–1883, 1885–1963 (obsolete since the 1960 census)
 * Maine's 4th congressional district: 1821–1883, 1885–1933 (obsolete since the 1930 census)
 * Maine's 5th congressional district: 1821–1883 (obsolete since the 1880 census)
 * Maine's 6th congressional district: 1821–1863 (obsolete since the 1860 census)
 * Maine's 7th congressional district: 1821–1853 (obsolete since the 1850 census)
 * Maine's 8th congressional district: 1833–1843 (obsolete since the 1840 census)

Maryland



 * Maryland's at-large congressional district: 1963–1967 (obsolete)
 * Maryland's 1st congressional district: 1789–present
 * Maryland's 2nd congressional district: 1789–present
 * Maryland's 3rd congressional district: 1789–present
 * Maryland's 4th congressional district: 1789–present
 * Maryland's 5th congressional district: 1789–present
 * Maryland's 6th congressional district: 1789–1863, 1873–present
 * Maryland's 7th congressional district: 1793–1843, 1953–present
 * Maryland's 8th congressional district: 1793–1835, 1967–present

Massachusetts



 * Massachusetts's at-large congressional district: 1793–1795 (obsolete)
 * Massachusetts's 1st congressional district: 1789–present
 * Massachusetts's 2nd congressional district: 1789–present
 * Massachusetts's 3rd congressional district: 1789–present
 * Massachusetts's 4th congressional district: 1789–present
 * Massachusetts's 5th congressional district: 1789–1793, 1795–present
 * Massachusetts's 6th congressional district: 1789–1793, 1795–present
 * Massachusetts's 7th congressional district: 1789–1793, 1795–present
 * Massachusetts's 8th congressional district: 1789–1793, 1795–present
 * Massachusetts's 9th congressional district: 1795–present
 * Massachusetts's 10th congressional district: 1795–2013 (obsolete since the 2010 census)
 * Massachusetts's 11th congressional district: 1795–1843, 1853–1863, 1873–1993 (obsolete since the 1990 census)
 * Massachusetts's 12th congressional district: 1795–1843, 1883–1983 (obsolete since the 1980 census)
 * Massachusetts's 13th congressional district: 1795–1833, 1893–1963 (obsolete since the 1960 census)
 * Massachusetts's 14th congressional district: 1795–1820 (moved to Maine), 1903–1963 (obsolete since the 1960 census)
 * Massachusetts's 15th congressional district: 1803–1820 (moved to Maine), 1913–1943 (obsolete since the 1940 census)
 * Massachusetts's 16th congressional district: 1803–1820 (moved to Maine), 1913–1933 (obsolete since the 1930 census)
 * Massachusetts's 17th congressional district: 1803–1820 (obsolete since 1820 move to Maine )
 * Massachusetts's 18th congressional district: 1813–1820 (obsolete since 1820 move to Maine )
 * Massachusetts's 19th congressional district: 1813–1820 (obsolete since 1820 move to Maine )
 * Massachusetts's 20th congressional district: 1813–1820 (obsolete since 1820 move to Maine )

Michigan



 * Michigan Territory's at-large congressional district: 1819–1837 (obsolete since statehood)
 * Michigan's at-large congressional district: 1837–1843, 1913–1915, 1963–1965 (obsolete)
 * Michigan's 1st congressional district: 1843–present
 * Michigan's 2nd congressional district: 1843–present
 * Michigan's 3rd congressional district: 1843–present
 * Michigan's 4th congressional district: 1853–present
 * Michigan's 5th congressional district: 1863–present
 * Michigan's 6th congressional district: 1863–present
 * Michigan's 7th congressional district: 1873–present
 * Michigan's 8th congressional district: 1873–present
 * Michigan's 9th congressional district: 1873–present
 * Michigan's 10th congressional district: 1883–present
 * Michigan's 11th congressional district: 1883–present
 * Michigan's 12th congressional district: 1893–present
 * Michigan's 13th congressional district: 1915–present
 * Michigan's 14th congressional district: 1933–2023 (obsolete since the 2020 census)
 * Michigan's 15th congressional district: 1933–2013 (obsolete since the 2010 census)
 * Michigan's 16th congressional district: 1933–2003 (obsolete since the 2000 census)
 * Michigan's 17th congressional district: 1933–1993 (obsolete since the 1990 census)
 * Michigan's 18th congressional district: 1953–1993 (obsolete since the 1990 census)
 * Michigan's 19th congressional district: 1965–1983 (obsolete since the 1980 census)

Minnesota



 * Minnesota Territory's at-large congressional district: 1849–1858 (obsolete since statehood)
 * Minnesota's at-large congressional district: 1858–1863, 1913–1915, 1933–1935 (obsolete)
 * Minnesota's 1st congressional district: 1863–1933, 1935–present
 * Minnesota's 2nd congressional district: 1863–1933, 1935–present
 * Minnesota's 3rd congressional district: 1873–1933, 1935–present
 * Minnesota's 4th congressional district: 1883–1933, 1935–present
 * Minnesota's 5th congressional district: 1883–1933, 1935–present
 * Minnesota's 6th congressional district: 1893–1933, 1935–present
 * Minnesota's 7th congressional district: 1893–1933, 1935–present
 * Minnesota's 8th congressional district: 1903–1933, 1935–present
 * Minnesota's 9th congressional district: 1903–1933, 1935–1963 (obsolete since the 1960 census)
 * Minnesota's 10th congressional district: 1915–1933 (obsolete since the 1930 census)

Mississippi



 * Mississippi Territory's at-large congressional district: 1801–1817 (obsolete since statehood)
 * Mississippi's at-large congressional district: 1817–1847, 1853–1855 (obsolete)
 * Mississippi's 1st congressional district: 1847–present
 * Mississippi's 2nd congressional district: 1847–present
 * Mississippi's 3rd congressional district: 1847–present
 * Mississippi's 4th congressional district: 1847–present
 * Mississippi's 5th congressional district: 1855–2003 (obsolete since the 2000 census)
 * Mississippi's 6th congressional district: 1873–1963 (obsolete since the 1960 census)
 * Mississippi's 7th congressional district: 1883–1953 (obsolete since the 1950 census)
 * Mississippi's 8th congressional district: 1903–1933 (obsolete since the 1930 census)

Missouri



 * Missouri Territory's at-large congressional district: 1812–1821 (obsolete since statehood)
 * Missouri's at-large congressional district: 1821–1847, 1933–1935 (obsolete)
 * Missouri's 1st congressional district: 1847–1933, 1935–present
 * Missouri's 2nd congressional district: 1847–1933, 1935–present
 * Missouri's 3rd congressional district: 1847–1933, 1935–present
 * Missouri's 4th congressional district: 1847–1933, 1935–present
 * Missouri's 5th congressional district: 1847–1933, 1935–present
 * Missouri's 6th congressional district: 1853–1933, 1935–present
 * Missouri's 7th congressional district: 1853–1933, 1935–present
 * Missouri's 8th congressional district: 1863–1933, 1935–present
 * Missouri's 9th congressional district: 1863–1933, 1935–2013 (obsolete since the 2010 census)
 * Missouri's 10th congressional district: 1873–1933, 1935–1983 (obsolete since the 1980 census)
 * Missouri's 11th congressional district: 1873–1933, 1935–1963 (obsolete since the 1960 census)
 * Missouri's 12th congressional district: 1873–1933, 1935–1953 (obsolete since the 1950 census)
 * Missouri's 13th congressional district: 1873–1933, 1935–1953 (obsolete since the 1950 census)
 * Missouri's 14th congressional district: 1883–1933 (obsolete since the 1930 census)
 * Missouri's 15th congressional district: 1893–1933 (obsolete since the 1930 census)
 * Missouri's 16th congressional district: 1903–1933 (obsolete since the 1930 census)

Montana



 * Montana Territory's at-large congressional district: 1865–1889 (obsolete since statehood)
 * Montana's at-large congressional district: 1889–1919, 1993–2023 (obsolete)
 * Montana's 1st congressional district: 1919–1993, 2023–present
 * Montana's 2nd congressional district: 1919–1993, 2023–present

Nebraska



 * Nebraska Territory's at-large congressional district: 1855–1867 (obsolete since statehood)
 * Nebraska's at-large congressional district: 1867–1883 (obsolete)
 * Nebraska's 1st congressional district: 1883–present
 * Nebraska's 2nd congressional district: 1883–present
 * Nebraska's 3rd congressional district: 1883–present
 * Nebraska's 4th congressional district: 1893–1963 (obsolete since the 1960 census)
 * Nebraska's 5th congressional district: 1893–1943 (obsolete since the 1940 census)
 * Nebraska's 6th congressional district: 1893–1933 (obsolete since the 1930 census)

Nevada



 * Nevada Territory's at-large congressional district: 1861–1864 (obsolete since statehood)
 * Nevada's at-large congressional district: 1864–1983 (obsolete)
 * Nevada's 1st congressional district: 1983–present
 * Nevada's 2nd congressional district: 1983–present
 * Nevada's 3rd congressional district: 2003–present
 * Nevada's 4th congressional district: 2013–present

New Hampshire



 * New Hampshire's at-large congressional district: 1789–1847 (obsolete)
 * New Hampshire's 1st congressional district: 1847–present
 * New Hampshire's 2nd congressional district: 1847–present
 * New Hampshire's 3rd congressional district: 1847–1883 (obsolete since the 1880 census)
 * New Hampshire's 4th congressional district: 1847–1853 (obsolete since the 1850 census)

New Jersey



 * New Jersey's at-large congressional district: 1789–1799, 1801–1813, 1815–1843 (obsolete)
 * New Jersey's 1st congressional district: 1799–1801, 1813–1815, 1843–present
 * New Jersey's 2nd congressional district: 1799–1801, 1813–1815, 1843–present
 * New Jersey's 3rd congressional district: 1799–1801, 1813–1815, 1843–present
 * New Jersey's 4th congressional district: 1799–1801, 1843–present
 * New Jersey's 5th congressional district: 1799–1801, 1843–present
 * New Jersey's 6th congressional district: 1873–present
 * New Jersey's 7th congressional district: 1873–present
 * New Jersey's 8th congressional district: 1893–present
 * New Jersey's 9th congressional district: 1903–present
 * New Jersey's 10th congressional district: 1903–present
 * New Jersey's 11th congressional district: 1913–present
 * New Jersey's 12th congressional district: 1913–present
 * New Jersey's 13th congressional district: 1933–2013 (obsolete since the 2010 census)
 * New Jersey's 14th congressional district: 1933–1993 (obsolete since the 1990 census)
 * New Jersey's 15th congressional district: 1963–1983 (obsolete since the 1980 census)

New Mexico



 * New Mexico Territory's at-large congressional district: 1851–1912 (obsolete since statehood)
 * New Mexico's at-large congressional district: 1912–1969 (obsolete)
 * New Mexico's 1st congressional district: 1969–present
 * New Mexico's 2nd congressional district: 1969–present
 * New Mexico's 3rd congressional district: 1983–present

New York



 * New York's at-large congressional district: 1873–1875, 1883–1885, 1933–1945 (obsolete)
 * New York's 1st congressional district: 1789–present
 * New York's 2nd congressional district: 1789–present
 * New York's 3rd congressional district: 1789–present
 * New York's 4th congressional district: 1789–present
 * New York's 5th congressional district: 1789–present
 * New York's 6th congressional district: 1789–present
 * New York's 7th congressional district: 1793–present
 * New York's 8th congressional district: 1793–present
 * New York's 9th congressional district: 1793–present
 * New York's 10th congressional district: 1793–present
 * New York's 11th congressional district: 1803–present
 * New York's 12th congressional district: 1803–present
 * New York's 13th congressional district: 1803–present
 * New York's 14th congressional district: 1803–present
 * New York's 15th congressional district: 1803–present
 * New York's 16th congressional district: 1803–1809, 1813–present
 * New York's 17th congressional district: 1803–1809, 1813–present
 * New York's 18th congressional district: 1813–present
 * New York's 19th congressional district: 1813–present
 * New York's 20th congressional district: 1813–present
 * New York's 21st congressional district: 1813–present
 * New York's 22nd congressional district: 1821–present
 * New York's 23rd congressional district: 1823–present
 * New York's 24th congressional district: 1823–present
 * New York's 25th congressional district: 1823–present
 * New York's 26th congressional district: 1823–present
 * New York's 27th congressional district: 1823–2023 (obsolete since the 2020 census)
 * New York's 28th congressional district: 1823–2013 (obsolete since the 2010 census)
 * New York's 29th congressional district: 1823–2013 (obsolete since the 2010 census)
 * New York's 30th congressional district: 1823–2003 (obsolete since the 2000 census)
 * New York's 31st congressional district: 1833–2003 (obsolete since the 2000 census)
 * New York's 32nd congressional district: 1833–1863, 1873–1993 (obsolete since the 1990 census)
 * New York's 33rd congressional district: 1833–1863, 1875–1993 (obsolete since the 1990 census)
 * New York's 34th congressional district: 1843–1853, 1885–1993 (obsolete since the 1990 census)
 * New York's 35th congressional district: 1903–1983 (obsolete since the 1980 census)
 * New York's 36th congressional district: 1903–1983 (obsolete since the 1980 census)
 * New York's 37th congressional district: 1903–1983 (obsolete since the 1980 census)
 * New York's 38th congressional district: 1913–1983 (obsolete since the 1980 census)
 * New York's 39th congressional district: 1913–1983 (obsolete since the 1980 census)
 * New York's 40th congressional district: 1913–1973 (obsolete since the 1970 census)
 * New York's 41st congressional district: 1913–1973 (obsolete since the 1970 census)
 * New York's 42nd congressional district: 1913–1963 (obsolete since the 1960 census)
 * New York's 43rd congressional district: 1913–1963 (obsolete since the 1960 census)
 * New York's 44th congressional district: 1945–1953 (obsolete since the 1950 census)
 * New York's 45th congressional district: 1945–1953 (obsolete since the 1950 census)

North Carolina



 * North Carolina's at-large congressional district: 1883–1885 (obsolete)
 * North Carolina's 1st congressional district: 1789–present
 * North Carolina's 2nd congressional district: 1789–present
 * North Carolina's 3rd congressional district: 1789–present
 * North Carolina's 4th congressional district: 1789–present
 * North Carolina's 5th congressional district: 1789–present
 * North Carolina's 6th congressional district: 1793–present
 * North Carolina's 7th congressional district: 1793–present
 * North Carolina's 8th congressional district: 1793–1863, 1873–present
 * North Carolina's 9th congressional district: 1793–1853, 1885–present
 * North Carolina's 10th congressional district: 1793–1843, 1903–present
 * North Carolina's 11th congressional district: 1803–1843, 1933–present
 * North Carolina's 12th congressional district: 1803–1843, 1943–1963, 1993–present
 * North Carolina's 13th congressional district: 1813–1843, 2003–present
 * North Carolina's 14th congressional district: 2023–present

North Dakota



 * Dakota Territory's at-large congressional district: 1861–1889 (obsolete since statehood)
 * North Dakota's at-large congressional district: 1889–1913, 1933–1963, 1973–present
 * North Dakota's 1st congressional district: 1913–1933, 1963–1973 (obsolete since the 1970 census)
 * North Dakota's 2nd congressional district: 1913–1933, 1963–1973 (obsolete since the 1970 census)
 * North Dakota's 3rd congressional district: 1913–1933 (obsolete since the 1930 census)

Northern Mariana Islands

 * See Non-voting delegations, below.

Ohio



 * Northwest Territory's at-large congressional district: 1799–1803 (obsolete since statehood)
 * Ohio's at-large congressional district: 1803–1813, 1913–1915, 1933–1953, 1963–1967 (obsolete)
 * Ohio's 1st congressional district: 1813–present
 * Ohio's 2nd congressional district: 1813–present
 * Ohio's 3rd congressional district: 1813–present
 * Ohio's 4th congressional district: 1813–present
 * Ohio's 5th congressional district: 1813–present
 * Ohio's 6th congressional district: 1813–present
 * Ohio's 7th congressional district: 1823–present
 * Ohio's 8th congressional district: 1823–present
 * Ohio's 9th congressional district: 1823–present
 * Ohio's 10th congressional district: 1823–present
 * Ohio's 11th congressional district: 1823–present
 * Ohio's 12th congressional district: 1823–present
 * Ohio's 13th congressional district: 1823–present
 * Ohio's 14th congressional district: 1823–present
 * Ohio's 15th congressional district: 1833–present
 * Ohio's 16th congressional district: 1833–2023 (obsolete due to the 2020 census)
 * Ohio's 17th congressional district: 1833–2013 (obsolete since the 2010 census)
 * Ohio's 18th congressional district: 1833–2013 (obsolete since the 2010 census)
 * Ohio's 19th congressional district: 1833–2003 (obsolete since the 2000 census)
 * Ohio's 20th congressional district: 1843–1863, 1873–1993 (obsolete since the 1990 census)
 * Ohio's 21st congressional district: 1843–1863, 1883–1993 (obsolete since the 1990 census)
 * Ohio's 22nd congressional district: 1915–1983 (obsolete since the 1980 census)
 * Ohio's 23rd congressional district: 1953–1983 (obsolete since the 1980 census)
 * Ohio's 24th congressional district: 1967–1973 (obsolete since the 1970 census)

Oklahoma



 * Oklahoma Territory's at-large congressional district: 1890–1907 (obsolete since statehood)
 * Oklahoma's at-large congressional district: 1913–1915, 1933–1943 (obsolete)
 * Oklahoma's 1st congressional district: 1907–present
 * Oklahoma's 2nd congressional district: 1907–present
 * Oklahoma's 3rd congressional district: 1907–present
 * Oklahoma's 4th congressional district: 1907–present
 * Oklahoma's 5th congressional district: 1907–present
 * Oklahoma's 6th congressional district: 1915–2003 (obsolete since the 2000 census)
 * Oklahoma's 7th congressional district: 1915–1953 (obsolete since the 1950 census)
 * Oklahoma's 8th congressional district: 1915–1953 (obsolete since the 1950 census)

Oregon



 * Oregon Territory's at-large congressional district: 1849–1859 (obsolete since statehood)
 * Oregon's at-large congressional district: 1859–1893 (obsolete)
 * Oregon's 1st congressional district: 1893–present
 * Oregon's 2nd congressional district: 1893–present
 * Oregon's 3rd congressional district: 1913–present
 * Oregon's 4th congressional district: 1943–present
 * Oregon's 5th congressional district: 1983–present
 * Oregon's 6th congressional district: 2023–present

Pennsylvania



 * Pennsylvania's at-large congressional district: 1789–1791, 1793–1795, 1873–1875, 1883–1889, 1893–1903, 1913–1923, 1943–1945 (obsolete)
 * Pennsylvania's 1st congressional district: 1791–1793, 1795–present
 * Pennsylvania's 2nd congressional district: 1791–1793, 1795–present
 * Pennsylvania's 3rd congressional district: 1791–1793, 1795–present
 * Pennsylvania's 4th congressional district: 1791–1793, 1795–present
 * Pennsylvania's 5th congressional district: 1791–1793, 1795–present
 * Pennsylvania's 6th congressional district: 1791–1793, 1795–present
 * Pennsylvania's 7th congressional district: 1791–1793, 1795–present
 * Pennsylvania's 8th congressional district: 1791–1793, 1795–present
 * Pennsylvania's 9th congressional district: 1795–present
 * Pennsylvania's 10th congressional district: 1795–present
 * Pennsylvania's 11th congressional district: 1795–present
 * Pennsylvania's 12th congressional district: 1795–1803, 1813–present
 * Pennsylvania's 13th congressional district: 1813–present
 * Pennsylvania's 14th congressional district: 1813–present
 * Pennsylvania's 15th congressional district: 1813–present
 * Pennsylvania's 16th congressional district: 1823–present
 * Pennsylvania's 17th congressional district: 1823–present
 * Pennsylvania's 18th congressional district: 1823–2023 (obsolete due to the 2020 census)
 * Pennsylvania's 19th congressional district: 1833–2013 (obsolete since the 2010 census)
 * Pennsylvania's 20th congressional district: 1833–2003 (obsolete since the 2000 census)
 * Pennsylvania's 21st congressional district: 1833–2003 (obsolete since the 2000 census)
 * Pennsylvania's 22nd congressional district: 1833–1993 (obsolete since the 1990 census)
 * Pennsylvania's 23rd congressional district: 1833–1993 (obsolete since the 1990 census)
 * Pennsylvania's 24th congressional district: 1833–1983 (obsolete since the 1980 census)
 * Pennsylvania's 25th congressional district: 1833–1843, 1853–1863, 1875–1983 (obsolete since the 1980 census)
 * Pennsylvania's 26th congressional district: 1875–1973 (obsolete since the 1970 census)
 * Pennsylvania's 27th congressional district: 1875–1973 (obsolete since the 1970 census)
 * Pennsylvania's 28th congressional district: 1889–1963 (obsolete since the 1960 census)
 * Pennsylvania's 29th congressional district: 1903–1963 (obsolete since the 1960 census)
 * Pennsylvania's 30th congressional district: 1903–1963 (obsolete since the 1960 census)
 * Pennsylvania's 31st congressional district: 1903–1953 (obsolete since the 1950 census)
 * Pennsylvania's 32nd congressional district: 1903–1953 (obsolete since the 1950 census)
 * Pennsylvania's 33rd congressional district: 1923–1953 (obsolete since the 1950 census)
 * Pennsylvania's 34th congressional district: 1923–1943 (obsolete since the 1940 census)
 * Pennsylvania's 35th congressional district: 1923–1933 (obsolete since the 1930 census)
 * Pennsylvania's 36th congressional district: 1923–1933 (obsolete since the 1930 census)

Philippines

 * See Non-voting delegations, below.

Puerto Rico

 * See Non-voting delegations, below.

Rhode Island



 * Rhode Island's at-large congressional district: 1790–1843 (obsolete)
 * Rhode Island's 1st congressional district: 1843–present
 * Rhode Island's 2nd congressional district: 1843–present
 * Rhode Island's 3rd congressional district: 1913–1933 (obsolete since the 1930 census)

South Carolina



 * South Carolina's at-large congressional district: 1873–1875 (obsolete)
 * South Carolina's 1st congressional district: 1789–present
 * South Carolina's 2nd congressional district: 1789–present
 * South Carolina's 3rd congressional district: 1789–present
 * South Carolina's 4th congressional district: 1789–present
 * South Carolina's 5th congressional district: 1789–1863, 1875–present
 * South Carolina's 6th congressional district: 1793–1863, 1883–present
 * South Carolina's 7th congressional district: 1803–1853, 1883–1933, 2013–present
 * South Carolina's 8th congressional district: 1803–1843 (obsolete since the 1840 census)
 * South Carolina's 9th congressional district: 1813–1843 (obsolete since the 1840 census)

South Dakota



 * Dakota Territory's at-large congressional district 1861–1889 (obsolete since statehood)
 * South Dakota's at-large congressional district: 1889–1913, 1983–present
 * South Dakota's 1st congressional district: 1913–1983 (obsolete since the 1980 census)
 * South Dakota's 2nd congressional district: 1913–1983 (obsolete since the 1980 census)
 * South Dakota's 3rd congressional district: 1913–1933 (obsolete since the 1930 census)

Tennessee



 * Southwest Territory's at-large congressional district: 1794–1796 (obsolete since statehood)
 * Tennessee's at-large congressional district: 1796–1805, 1873–1875 (obsolete)
 * Tennessee's 1st congressional district: 1805–present
 * Tennessee's 2nd congressional district: 1805–present
 * Tennessee's 3rd congressional district: 1805–present
 * Tennessee's 4th congressional district: 1813–present
 * Tennessee's 5th congressional district: 1813–present
 * Tennessee's 6th congressional district: 1813–present
 * Tennessee's 7th congressional district: 1823–present
 * Tennessee's 8th congressional district: 1823–present
 * Tennessee's 9th congressional district: 1823–1863, 1873–1973, 1983–present
 * Tennessee's 10th congressional district: 1833–1863, 1875–1933, 1943–1953 (obsolete since the 1950 census)
 * Tennessee's 11th congressional district: 1833–1853 (obsolete since the 1850 census)
 * Tennessee's 12th congressional district: 1833–1843 (obsolete since the 1840 census)
 * Tennessee's 13th congressional district: 1833–1843 (obsolete since the 1840 census)

Texas



 * Texas's at-large congressional district: 1873–1875, 1913–1919, 1933–1935, 1953–1959, 1963–1967 (obsolete)
 * Texas's 1st congressional district: 1845–present
 * Texas's 2nd congressional district: 1845–present
 * Texas's 3rd congressional district: 1863–present
 * Texas's 4th congressional district: 1863–present
 * Texas's 5th congressional district: 1875–present
 * Texas's 6th congressional district: 1875–present
 * Texas's 7th congressional district: 1883–present
 * Texas's 8th congressional district: 1883–present
 * Texas's 9th congressional district: 1883–present
 * Texas's 10th congressional district: 1883–present
 * Texas's 11th congressional district: 1883–present
 * Texas's 12th congressional district: 1893–present
 * Texas's 13th congressional district: 1893–present
 * Texas's 14th congressional district: 1903–present
 * Texas's 15th congressional district: 1903–present
 * Texas's 16th congressional district: 1903–present
 * Texas's 17th congressional district: 1919–present
 * Texas's 18th congressional district: 1919–present
 * Texas's 19th congressional district: 1935–present
 * Texas's 20th congressional district: 1935–present
 * Texas's 21st congressional district: 1935–present
 * Texas's 22nd congressional district: 1959–present
 * Texas's 23rd congressional district: 1967–present
 * Texas's 24th congressional district: 1973–present
 * Texas's 25th congressional district: 1983–present
 * Texas's 26th congressional district: 1983–present
 * Texas's 27th congressional district: 1983–present
 * Texas's 28th congressional district: 1993–present
 * Texas's 29th congressional district: 1993–present
 * Texas's 30th congressional district: 1993–present
 * Texas's 31st congressional district: 2003–present
 * Texas's 32nd congressional district: 2003–present
 * Texas's 33rd congressional district: 2013–present
 * Texas's 34th congressional district: 2013–present
 * Texas's 35th congressional district: 2013–present
 * Texas's 36th congressional district: 2013–present
 * Texas's 37th congressional district: 2023–present
 * Texas's 38th congressional district: 2023–present

U.S. Virgin Islands

 * See Non-voting delegations, below.

Utah



 * Utah Territory's at-large congressional district: 1851–1896 (obsolete since statehood)
 * Utah's at-large congressional district: 1896–1913 (obsolete)
 * Utah's 1st congressional district: 1913–present
 * Utah's 2nd congressional district: 1913–present
 * Utah's 3rd congressional district: 1983–present
 * Utah's 4th congressional district: 2013–present

Vermont



 * Vermont's at-large congressional district: 1813–1821, 1823–1825, 1933–present
 * Vermont's 1st congressional district: 1791–1813, 1821–1823, 1825–1933 (obsolete since the 1930 census)
 * Vermont's 2nd congressional district: 1791–1813, 1821–1823, 1825–1933 (obsolete since the 1930 census)
 * Vermont's 3rd congressional district: 1803–1813, 1821–1823, 1825–1883 (obsolete since the 1880 census)
 * Vermont's 4th congressional district: 1803–1813, 1821–1823, 1825–1853 (obsolete since the 1850 census)
 * Vermont's 5th congressional district: 1821–1823, 1825–1843 (obsolete since the 1840 census)
 * Vermont's 6th congressional district: 1821–1823 (obsolete since the 1820 census)

Virginia



 * Virginia's at-large congressional district: 1883–1885, 1933–1935 (obsolete)
 * Virginia's 1st congressional district: 1789–1933, 1935–present
 * Virginia's 2nd congressional district: 1789–1933, 1935–present
 * Virginia's 3rd congressional district: 1789–1933, 1935–present
 * Virginia's 4th congressional district: 1789–1933, 1935–present
 * Virginia's 5th congressional district: 1789–1933, 1935–present
 * Virginia's 6th congressional district: 1789–1933, 1935–present
 * Virginia's 7th congressional district: 1789–1933, 1935–present
 * Virginia's 8th congressional district: 1789–1933, 1935–present
 * Virginia's 9th congressional district: 1789–1863, 1873–1933, 1935–present
 * Virginia's 10th congressional district: 1789–1863, 1885–1933, 1953–present
 * Virginia's 11th congressional district: 1793–1863, 1993–present
 * Virginia's 12th congressional district: 1793–1863 (obsolete since the 1863 move to West Virginia)
 * Virginia's 13th congressional district: 1793–1863 (obsolete since the 1863 move to West Virginia)
 * Virginia's 14th congressional district: 1793–1853 (obsolete since the 1850 census)
 * Virginia's 15th congressional district: 1793–1853 (obsolete since the 1850 census)
 * Virginia's 16th congressional district: 1793–1843 (obsolete since the 1840 census)
 * Virginia's 17th congressional district: 1793–1843 (obsolete since the 1840 census)
 * Virginia's 18th congressional district: 1793–1843 (obsolete since the 1840 census)
 * Virginia's 19th congressional district: 1793–1843 (obsolete since the 1840 census)
 * Virginia's 20th congressional district: 1803–1843 (obsolete since the 1840 census)
 * Virginia's 21st congressional district: 1803–1843 (obsolete since the 1840 census)
 * Virginia's 22nd congressional district: 1803–1833 (obsolete since the 1830 census)
 * Virginia's 23rd congressional district: 1813–1823 (obsolete since the 1820 census)

Washington



 * Washington Territory's at-large congressional district: 1854–1889 (obsolete since statehood)
 * Washington's at-large congressional district: 1889–1909, 1913–1915, 1953–1959 (obsolete)
 * Washington's 1st congressional district: 1909–present
 * Washington's 2nd congressional district: 1909–present
 * Washington's 3rd congressional district: 1909–present
 * Washington's 4th congressional district: 1915–present
 * Washington's 5th congressional district: 1915–present
 * Washington's 6th congressional district: 1933–present
 * Washington's 7th congressional district: 1959–present
 * Washington's 8th congressional district: 1983–present
 * Washington's 9th congressional district: 1993–present
 * Washington's 10th congressional district: 2013–present

West Virginia



 * West Virginia's at-large congressional district: 1913–1917 (obsolete)
 * West Virginia's 1st congressional district: 1863–present
 * West Virginia's 2nd congressional district: 1863–present
 * West Virginia's 3rd congressional district: 1863–2023 (obsolete due to the 2020 census)
 * West Virginia's 4th congressional district: 1883–1993 (obsolete since the 1990 census)
 * West Virginia's 5th congressional district: 1903–1973 (obsolete since the 1970 census)
 * West Virginia's 6th congressional district: 1917–1963 (obsolete since the 1960 census)

Wisconsin

 * Wisconsin's 1st congressional district: 1848–present
 * Wisconsin's 2nd congressional district: 1848–present
 * Wisconsin's 3rd congressional district: 1849–present
 * Wisconsin's 4th congressional district: 1863–present
 * Wisconsin's 5th congressional district: 1863–present
 * Wisconsin's 6th congressional district: 1863–present
 * Wisconsin's 7th congressional district: 1873–present
 * Wisconsin's 8th congressional district: 1873–present
 * Wisconsin's 9th congressional district: 1883–2003 (obsolete since the 2000 census)
 * Wisconsin's 10th congressional district: 1893–1973 (obsolete since the 1970 census)
 * Wisconsin's 11th congressional district: 1903–1933 (obsolete since the 1930 census)

Wyoming

 * Wyoming Territory's at-large congressional district: 1869–1890 (obsolete since statehood)
 * Wyoming's at-large congressional district: 1890–present

Non-voting delegations

 * American Samoa's at-large congressional district, 1978–present
 * Cherokee Nation, 1835 & 2019–present (yet to be seated)
 * Choctaw Nation, 1830 (never seated)
 * District of Columbia's at-large congressional district, 1871–1875 & 1971–present
 * Guam's at-large congressional district, 1970–present
 * Northern Mariana Islands's at-large congressional district, 2009–present
 * Philippines's at-large congressional district, 1907–1946 (obsolete since independence)
 * Puerto Rico's at-large congressional district, 1901–present
 * United States Virgin Islands's at-large congressional district, 1970–present

List of pre-2020 districts by area
This list includes the 435 voting districts immediately before 2020 redistricting (used from 2018–2023), along with the 6 non-voting delegations. These geographic values reflect the changes to Pennsylvania's congressional districts in 2018.

Comparisons

 * Constituency
 * Australia
 * Canada
 * European Parliament
 * France
 * Ireland
 * New Zealand
 * Philippines
 * Singapore: Group Representation Constituency, Non-Constituency Member of Parliament
 * United Kingdom