List of United States congressional districts

, starting in 2013, as a result of the 2010 United States Census]]
, from 2003 to 2013, as a result of the 2000 United States Census]]
Congressional districts in the United States are electoral divisions for electing members of the United States House of Representatives. There are now 435 voting seats in the House of Representatives. Each seat represents around 761,000 people. There have been 435 voting seats since 1913, except for 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*. Also, 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 counts the number of people in the United States every ten years. This is called the decennial census. The numbers from the Census are used to figure out how many representavies each  state gets. This is called "apportionment". The 2012 elections were the first to be based on the congressional districts which were defined based on the 2010 United States Census.

Each state is in charge of the redistricting of districts within their state, and several states have one "at-large" division. Redistricting must take place if the number of members changes after a reapportionment, or may take place at any other time if demographics represented in a district has changed substantially. 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 (no longer being used) districts, and the six current and one obsolete non-voting delegations.

## Extremes 
### Population 
* Average population: 761,169 people based on 2020 U.S. census. In 2010, also : 526,283.

### Area 
* District with the greatest area: , same as in 2010.
* District with the greatest area that comprises less than an entire state: . In 2010: .
* District with the smallest area: . In 2010: .

### Oldest district 
* , same geographical borders since 1789.

### American Human Development Index 
* District with the highest American Human Development Index score: .
* District with the lowest American Human Development Index score: .

## Alabama 
* : 1818–1819 (obsolete since statehood)
* : 1819–1823, 1841–1843, 1873–1877, 1913–1917, 1963–1965 (obsolete)
* : 1823–1841, 1843–1963, 1965–present
* : 1823–1841, 1843–1963, 1965–present
* : 1823–1841, 1843–1963, 1965–present
* : 1833–1841, 1843–1963, 1965–present
* : 1833–1841, 1843–1963, 1965–present
* : 1843–1963, 1965–present
* : 1843–1863, 1877–1963, 1965–present
* : 1877–1963, 1965–1973 (obsolete since the 1970 census)
* : 1893–1963 (obsolete since the 1960 census)
* : 1917–1933 (obsolete since the 1930 census)

## Alaska 
* : 1906–1959 (obsolete since statehood)
* : 1959–present

## American Samoa 
*See Non-voting delegations, below.*

## Arizona 
* : 1863–1912 (obsolete since statehood)
* : 1912–1949 (obsolete)
* : 1949–present
* : 1949–present
* : 1963–present
* : 1973–present
* : 1983–present
* : 1993–present
* : 2003–present
* : 2003–present
* : 2013–present

## Arkansas 
* : 1819–1836 (obsolete since statehood)
* : 1836–1853, 1873–1875, 1883–1885 (obsolete)
* : 1853–present
* : 1853–present
* : 1863–present
* : 1875–present
* : 1885–1963 (obsolete since the 1960 census)
* : 1893–1963 (obsolete since the 1960 census)
* : 1903–1953 (obsolete since the 1950 census)

## California 
* : 1849–1865, 1883–1885 (obsolete)
* : 1865–present
* : 1865–present
* : 1865–present
* : 1873–present
* : 1885–present
* : 1885–present
* : 1893–present
* : 1903–present
* : 1913–present
* : 1913–present
* : 1913–present
* : 1933–present
* : 1933–present
* : 1933–present
* : 1933–present
* : 1933–present
* : 1933–present
* : 1933–present
* : 1933–present
* : 1933–present
* : 1943–present
* : 1943–present
* : 1943–present
* : 1953–present
* : 1953–present
* : 1953–present
* : 1953–present
* : 1953–present
* : 1953–present
* : 1953–present
* : 1963–present
* : 1963–present
* : 1963–present
* : 1963–present
* : 1963–present
* : 1963–present
* : 1963–present
* : 1963–present
* : 1973–present
* : 1973–present
* : 1973–present
* : 1973–present
* : 1973–present
* : 1983–present
* : 1983–present
* : 1993–present
* : 1993–present
* : 1993–present
* : 1993–present
* : 1993–present
* : 1993–present
* : 1993–present
* : 2003–2023 (obsolete due to the 2020 census)

## Colorado 
* : 1861–1876 (obsolete since statehood)
* : 1876–1893, 1903–1915 (obsolete)
* : 1893–present
* : 1893–present
* : 1915–present
* : 1915–present
* : 1973–present
* : 1983–present
* : 2003–present
* : 2023–present

## Connecticut 
* : 1789–1837, 1903–1913, 1933–1965 (obsolete)
* : 1837–present
* : 1837–present
* : 1837–present
* : 1837–present
* : 1837–1843, 1913–present
* : 1837–1843, 1965–2003 (obsolete since the 2000 census)

## Delaware 
* : 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 
* : 1822–1845 (obsolete since statehood)
* : 1845–1875, 1913–1915, 1933–1937, 1943–1945 (obsolete)
* : 1875–present
* : 1875–present
* : 1903–present
* : 1915–present
* : 1937–present
* : 1945–present
* : 1953–present
* : 1953–present
* : 1963–present
* : 1963–present
* : 1963–present
* : 1963–present
* : 1973–present
* : 1973–present
* : 1973–present
* : 1983–present
* : 1983–present
* : 1983–present
* : 1983–present
* : 1993–present
* : 1993–present
* : 1993–present
* : 1993–present
* : 2003–present
* : 2003–present
* : 2013–present
* : 2013–present
* : 2023–present

## Georgia 
* : 1793–1827, 1829–1845, 1883–1885 (obsolete)
* : 1789–1793, 1827–1829, 1845–present
* : 1789–1793, 1827–1829, 1845–present
* : 1789–1793, 1827–1829, 1845–present
* : 1827–1829, 1845–present
* : 1827–1829, 1845–present
* : 1827–1829, 1845–present
* : 1827–1829, 1845–present
* : 1845–1863, 1873–present
* : 1873–present
* : 1885–present
* : 1893–1933, 1993–present
* : 1913–1933, 2003–present
* : 2003–present
* : 2013–present

## Guam 
*See Non-voting delegations, below.*

## Hawaii 
* : 1900–1959 (obsolete since statehood)
* : 1959–1971 (obsolete)
* : 1971–present
* : 1971–present

## Idaho 
* : 1864–1890 (obsolete since statehood)
* : 1890–1919 (obsolete)
* : 1919–present
* : 1919–present

## Illinois 
* : 1812–1818 (obsolete since statehood)
* : 1818–1833, 1863–1873, 1893–1895, 1913–1949 (obsolete)
* : 1833–present
* : 1833–present
* : 1833–present
* : 1843–present
* : 1843–present
* : 1843–present
* : 1843–present
* : 1853–present
* : 1853–present
* : 1863–present
* : 1863–present
* : 1863–present
* : 1863–present
* : 1873–present
* : 1873–present
* : 1873–present
* : 1873–present
* : 1873–2023 (obsolete due to the 2020 census)
* : 1873–2013 (obsolete since the 2010 census)
* : 1883–2003 (obsolete since the 2000 census)
* : 1895–1993 (obsolete since the 1990 census)
* : 1895–1993 (obsolete since the 1990 census)
* : 1903–1983 (obsolete since the 1980 census)
* : 1903–1983 (obsolete since the 1980 census)
* : 1903–1963 (obsolete since the 1960 census)
* : 1949–1953 (obsolete since the 1950 census)

## Indiana 
* : 1805–1816 (obsolete since statehood)
* : 1816–1823, 1873–1875 (obsolete)
* : 1823–present
* : 1823–present
* : 1823–present
* : 1833–present
* : 1833–present
* : 1833–present
* : 1833–present
* : 1843–present
* : 1843–present
* : 1843–2003 (obsolete since the 2000 census)
* : 1853–1983 (obsolete since the 1980 census)
* : 1875–1943 (obsolete since the 1940 census)
* : 1875–1933 (obsolete since the 1930 census)

## Iowa 
* : 1838–1846 (obsolete since statehood)
* : 1846–1847 (obsolete)
* : 1847–present
* : 1847–present
* : 1863–present
* : 1863–present
* : 1863–2013 (obsolete since the 2010 census)
* : 1863–1993 (obsolete since the 1990 census)
* : 1873–1973 (obsolete since the 1970 census)
* : 1873–1963 (obsolete since the 1960 census)
* : 1873–1943 (obsolete since the 1940 census)
* : 1883–1933 (obsolete since the 1930 census)
* : 1883–1933 (obsolete since the 1930 census)

## Kansas 
* : 1854–1861 (obsolete since statehood)
* : 1861–1875, 1883–1885, 1893–1907 (obsolete)
* : 1875–present
* : 1875–present
* : 1875–present
* : 1885–present
* : 1885–1993 (obsolete since the 1990 census)
* : 1885–1963 (obsolete since the 1960 census)
* : 1885–1943 (obsolete since the 1940 census)
* : 1907–1933 (obsolete since the 1930 census)

## Kentucky 
* : 1933–1935 (obsolete)
* : 1792–1933, 1935–present
* : 1792–1933, 1935–present
* : 1803–1933, 1935–present
* : 1803–1933, 1935–present
* : 1803–1933, 1935–present
* : 1803–1933, 1935–present
* : 1813–1933, 1935–1993 (obsolete since the 1990 census)
* : 1813–1933, 1935–1963 (obsolete since the 1960 census)
* : 1813–1933, 1935–1953 (obsolete since the 1950 census)
* : 1813–1863, 1873–1933 (obsolete since the 1930 census)
* : 1823–1843, 1883–1933 (obsolete since the 1930 census)
* : 1823–1843 (obsolete since the 1840 census)
* : 1833–1843 (obsolete since the 1840 census)

## Louisiana 
* : 1806–1812 (obsolete since statehood)
* : 1812–1823, 1873–1875 (obsolete)
* : 1823–present
* : 1823–present
* : 1823–present
* : 1843–present
* : 1863–present
* : 1875–present
* : 1903–2013 (obsolete since the 2010 census)
* : 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  through ) were credited to Maine soon after it became a state in 1820. See District of Maine.

* : 1820–1821, 1883–1885 (obsolete)
* : 1821–1883, 1885–present
* : 1821–1883, 1885–present
* : 1821–1883, 1885–1963 (obsolete since the 1960 census)
* : 1821–1883, 1885–1933 (obsolete since the 1930 census)
* : 1821–1883 (obsolete since the 1880 census)
* : 1821–1863 (obsolete since the 1860 census)
* : 1821–1853 (obsolete since the 1850 census)
* : 1833–1843 (obsolete since the 1840 census)

## Maryland 
* : 1963–1967 (obsolete)
* : 1789–present
* : 1789–present
* : 1789–present
* : 1789–present
* : 1789–present
* : 1789–1863, 1873–present
* : 1793–1843, 1953–present
* : 1793–1835, 1967–present

## Massachusetts 
* : 1793–1795 (obsolete)
* : 1789–present
* : 1789–present
* : 1789–present
* : 1789–present
* : 1789–1793, 1795–present
* : 1789–1793, 1795–present
* : 1789–1793, 1795–present
* : 1789–1793, 1795–present
* : 1795–present
* : 1795–2013 (obsolete since the 2010 census)
* : 1795–1843, 1853–1863, 1873–1993 (obsolete since the 1990 census)
* : 1795–1843, 1883–1983 (obsolete since the 1980 census)
* : 1795–1833, 1893–1963 (obsolete since the 1960 census)
* : 1795–1820 (moved to Maine), 1903–1963 (obsolete since the 1960 census)
* : 1803–1820 (moved to Maine), 1913–1943 (obsolete since the 1940 census)
* : 1803–1820 (moved to Maine), 1913–1933 (obsolete since the 1930 census)
* : 1803–1820 (obsolete since 1820 move to Maine)
* : 1813–1820 (obsolete since 1820 move to Maine

## Related pages
* List of Members of the U.S. House of Representatives
* Apportionment
** United States Congressional apportionment
* General ticket
* Redistricting
** Apportionment paradox
** Gerrymandering
** Texas Eleven
** Voting Rights Act
* Representation
* United States Census Bureau
* Better Know A District: A recurring segment on The Colbert Report, in which Stephen Colbert profiled a congressional district and interviewed its Representative. Described by Colbert as a "435-part series".

### Comparisons 
* Constituency
* Australia
* Canada
* European Parliament
* Ireland
* Singapore: Group Representation Constituency, Non-Constituency Member of Parliament
* United Kingdom

## Notes 
## References 
* 
* 

## Other websites
* Find a Senator or Representative via Govtrack.us
* United States Census Bureau:
** Congressional Apportionment
** Census Redistricting Data Office
** Geography division
* 
*