| Connecticut's 3rd congressional district | 
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| Interactive map of district boundaries since January 3, 2023 | 
| Representative |  | 
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| Area | 485 sq mi (1,260 km2) | 
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| Distribution |  | 
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| Population (2023) | 726,058 | 
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| Median household income
 | $81,637[1] | 
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| Ethnicity |  | 
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| Cook PVI | D+8[2] | 
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 Connecticut's 3rd congressional district is a congressional district in the U.S. state of Connecticut. Located in the central part of the state, the district includes the city of New Haven and its surrounding suburbs. 
Principal cities include: Middletown, New Haven, and Stratford. 
The district is currently represented by Democrat Rosa DeLauro. 
  History
 The 3rd congressional district has existed since 1837, having been organized from the at-large congressional district. It is centered on New Haven and its suburbs. The district comprises four-fifths of New Haven County, a small portion of Middlesex County, including most of Middletown, and most of Stratford and a small section of Shelton in Fairfield County. 
New Haven and its surrounding suburbs are largely Democratic, making the district very Democratic in local and federal elections. Among districts statewide, only the 1st congressional district is considered more Democratic. Four Democratic strongholds, New Haven, Hamden, Middletown, and West Haven, comprise 40% of the total district population.  Since 2000, Democratic presidential candidates have carried the district by a margin of 26 points.  John Kerry, being the exception, still defeated George W. Bush by a comfortable 14 points. On the state level, moderate Republicans John G. Rowland and M. Jodi Rell have also carried the district. 
Since 1933, Democrats have held the district for all but six terms (1943–45, 1947–49, 1953–59, 1981–83). Between 1972-1988, every Republican nominee for President carried the district, along with the state itself.  In his sole run for a House seat, Joe Lieberman, lost the district to a Republican in 1980. 
 Composition
 For the 118th and successive Congresses (based on redistricting following the 2020 census), Connecticut's 3rd district contains portions of four planning regions and 25 municipalities.[3] 
Greater Bridgeport Planning Region (1) 
 - Stratford
Lower Connecticut River Valley Planning Region (3) 
 - Durham, Middlefield, Middletown (part; also 1st)
Naugatuck Valley Planning Region (8) 
 - Ansonia, Beacon Falls, Derby, Naugatuck, Prospect, Seymour, Shelton (part; also 4th), Waterbury (part; also 5th)
South Central Connecticut Planning Region (13) 
 - Bethany, Branford, East Haven, Guilford, Hamden, Milford, North Branford, New Haven, North Haven, Orange, Wallingford, West Haven, Woodbridge
Voter registration
   | Voter registration and party enrollment as of October 30, 2012[4] | 
  | Party | Active Voters | Inactive Voters | Total Voters | Percentage | 
  |  | Democratic | 145,529 | 10,801 | 156,330 | 37.50% | 
  |  | Republican | 65,324 | 3,352 | 68,676 | 16.47% | 
  |  | Minor Parties | 873 | 120 | 993 | 0.24% | 
  |  | Unaffiliated | 178,593 | 12,340 | 190,933 | 45.80% | 
  | Total | 390,319 | 26,613 | 416,932 | 100% | 
 Recent election results from statewide races
  Recent elections
 1990
  1992
  1994
  1996
  1998
  2000
  2002
  2004
  2006
  2008
  2010
  2012
  2014
  2016
  2018
  2020
  2022
  2024
  List of members representing the district
     | Member (Residence)
 | Party | Years of Service | Cong ress
 | Electoral history | Location | 
  | District created March 4, 1837 | 
  |  Elisha Haley
 (Mystic)
 | Democratic | March 4, 1837 – March 3, 1839
 | 25th | Redistricted from the at-large district and re-elected in 1837. Retired.
 |  | 
  | Thomas Wheeler Williams (New London)
 | Whig | March 4, 1839 – March 3, 1843
 | 26th 27th
 | Elected in 1839. Re-elected in 1840.
 Retired.
 | 
  | George S. Catlin (Windham)
 | Democratic | March 4, 1843 – March 3, 1845
 | 28th | Elected in 1843. Retired.
 | 
  | John A. Rockwell (Norwich)
 | Whig | March 4, 1845 – March 3, 1849
 | 29th 30th
 | Elected in 1845. Re-elected in 1847.
 Lost re-election.
 | 
  | .jpg) Chauncey Fitch Cleveland
 (Hampton)
 | Democratic | March 4, 1849 – March 3, 1853
 | 31st 32nd
 | Elected in 1849. Re-elected in 1851.
 Retired.
 | 
  | Nathan Belcher (New London)
 | Democratic | March 4, 1853 – March 3, 1855
 | 33rd | Elected in 1853. Retired.
 | 
  |  Sidney Dean
 (Putnam)
 | Know Nothing | March 4, 1855 – March 3, 1857
 | 34th 35th
 | Elected in 1855. Re-elected in 1857.
 Retired.
 | 
  | Republican | March 4, 1857 – March 3, 1859
 | 
  | Alfred A. Burnham (Windham)
 | Republican | March 4, 1859 – March 3, 1863
 | 36th 37th
 | Elected in 1859. Re-elected in 1861.
 Retired.
 | 
  |  Augustus Brandegee
 (New London)
 | Republican | March 4, 1863 – March 3, 1867
 | 38th 39th
 | Elected in 1863. Re-elected in 1865.
 | 
  |  Henry H. Starkweather
 (Norwich)
 | Republican | March 4, 1867 – January 28, 1876
 | 40th 41st
 42nd
 43rd
 44th
 | Elected in 1867. Re-elected in 1869.
 Re-elected in 1871.
 Re-elected in 1873.
 Re-elected in 1875.
 Died.
 | 
  | Vacant | January 28, 1876 – April 12, 1876
 | 44th |  | 
  |  John T. Wait
 (Norwich)
 | Republican | April 12, 1876 – March 3, 1887
 | 44th 45th
 46th
 47th
 48th
 49th
 | Elected to finish Starkweather's term. Re-elected in 1876.
 Re-elected in 1878.
 Re-elected in 1880.
 Re-elected in 1882.
 Re-elected in 1884.
 Retired.
 | 
  |  Charles Addison Russell
 (Killingly)
 | Republican | March 4, 1887 – October 23, 1902
 | 50th 51st
 52nd
 53rd
 54th
 55th
 56th
 57th
 | Elected in 1886. Re-elected in 1888.
 Re-elected in 1890.
 Re-elected in 1892.
 Re-elected in 1894.
 Re-elected in 1896.
 Re-elected in 1898.
 Re-elected in 1900.
 Died.
 | 
  | Vacant | October 23, 1902 – November 4, 1902
 | 57th |  | 
  |  Frank B. Brandegee
 (New London)
 | Republican | November 4, 1902 – May 10, 1905
 | 57th 58th
 59th
 | Elected to finish Russell's term. Re-elected in 1902.
 Re-elected in 1904.
 Resigned when elected to the US Senate
 | 
  | Vacant | May 10, 1905 – October 2, 1905
 | 59th |  | 
  |  Edwin W. Higgins
 (Norwich)
 | Republican | October 2, 1905 – March 3, 1913
 | 59th 60th
 61st
 62nd
 | Elected to finish Brandegee's term. Re-elected in 1906.
 Re-elected in 1908.
 Re-elected in 1910.
 Retired.
 | 
  |  Thomas L. Reilly
 (Meriden)
 | Democratic | March 4, 1913 – March 3, 1915
 | 63rd | Elected in 1912. Lost re-election.
 | 
  |  John Q. Tilson
 (New Haven)
 | Republican | March 4, 1915 – December 3, 1932
 | 64th 65th
 66th
 67th
 68th
 69th
 70th
 71st
 72nd
 | Elected in 1914. Re-elected in 1916.
 Re-elected in 1918.
 Re-elected in 1920.
 Re-elected in 1922.
 Re-elected in 1924.
 Re-elected in 1926.
 Re-elected in 1928.
 Re-elected in 1930.
 Resigned.
 | 
  | Vacant | December 3, 1932 – March 3, 1933
 | 72nd |  | 
  |  Francis T. Maloney
 (Meriden)
 | Democratic | March 4, 1933 – January 3, 1935
 | 73rd | Elected in 1932. Retired to run for U.S. senator.
 | 
  |  James A. Shanley
 (New Haven)
 | Democratic | January 3, 1935 – January 3, 1943
 | 74th 75th
 76th
 77th
 | Elected in 1934. Re-elected in 1936.
 Re-elected in 1938.
 Re-elected in 1940.
 Lost re-election.
 | 
  | Ranulf Compton (Madison)
 | Republican | January 3, 1943 – January 3, 1945
 | 78th | Elected in 1942. Lost re-election.
 | 
  | James P. Geelan (New Haven)
 | Democratic | January 3, 1945 – January 3, 1947
 | 79th | Elected in 1944. Lost re-election.
 | 
  | Ellsworth Foote (North Branford)
 | Republican | January 3, 1947 – January 3, 1949
 | 80th | Elected in 1946. Lost re-election.
 | 
  | John A. McGuire (Wallingford)
 | Democratic | January 3, 1949 – January 3, 1953
 | 81st 82nd
 | Elected in 1948. Re-elected in 1950.
 Lost re-election.
 | 
  |  Albert W. Cretella
 (North Haven)
 | Republican | January 3, 1953 – January 3, 1959
 | 83rd 84th
 85th
 | Elected in 1952. Re-elected in 1954.
 Re-elected in 1956.
 Lost re-election.
 | 
  |  Robert Giaimo
 (North Haven)
 | Democratic | January 3, 1959 – January 3, 1981
 | 86th 87th
 88th
 89th
 90th
 91st
 92nd
 93rd
 94th
 95th
 96th
 | Elected in 1958. Re-elected in 1960.
 Re-elected in 1962.
 Re-elected in 1964.
 Re-elected in 1966.
 Re-elected in 1968.
 Re-elected in 1970.
 Re-elected in 1972.
 Re-elected in 1974.
 Re-elected in 1976.
 Re-elected in 1978.
 Retired.
 | 
  |  Lawrence J. DeNardis
 (Hamden)
 | Republican | January 3, 1981 – January 3, 1983
 | 97th | Elected in 1980. Lost re-election.
 | 
  |  Bruce Morrison
 (Hamden)
 | Democratic | January 3, 1983 – January 3, 1991
 | 98th 99th
 100th
 101st
 | Elected in 1982. Re-elected in 1984.
 Re-elected in 1986.
 Re-elected in 1988.
 Retired to run for Governor of Connecticut.
 | 
  |  Rosa DeLauro
 (New Haven)
 | Democratic | January 3, 1991 – present
 | 102nd 103rd
 104th
 105th
 106th
 107th
 108th
 109th
 110th
 111th
 112th
 113th
 114th
 115th
 116th
 117th
 118th
 119th
 | Elected in 1990. Re-elected in 1992.
 Re-elected in 1994.
 Re-elected in 1996.
 Re-elected in 1998.
 Re-elected in 2000.
 Re-elected in 2002.
 Re-elected in 2004.
 Re-elected in 2006.
 Re-elected in 2008.
 Re-elected in 2010.
 Re-elected in 2012.
 Re-elected in 2014.
 Re-elected in 2016.
 Re-elected in 2018.
 Re-elected in 2020.
 Re-elected in 2022.
 Re-elected in 2024.
 | 
  | 1993–2003 [data missing]
 | 
  | 2003–2013   | 
  | 2013–2023 .tif.png)  | 
  | 2023–present .svg.png)  | 
 References
   - ^ Center for New Media & Promotion (CNMP), US Census Bureau. "My Congressional District". www.census.gov. 
- ^ "2025 Cook PVI℠: District Map and List (119th Congress)". Cook Political Report. Retrieved April 5, 2025. 
- ^ https://www2.census.gov/geo/maps/cong_dist/cd118/cd_based/ST09/CD118_CT03.pdf  
- ^ "Registration and Party Enrollment Statistics as of October 30, 2012" (PDF). Connecticut Secretary of State. Archived from the original (PDF) on September 23, 2006. Retrieved October 30, 2012. 
- ^ "DRA 2020". Daves Redistricting. Retrieved July 10, 2025. 
- ^ "State of Connecticut Elections Database » 2022 Nov 8 :: General Election :: United States Senator :: State of Connecticut". State of Connecticut Elections Database. Archived from the original on December 28, 2024. Retrieved January 25, 2025. 
- ^ "State of Connecticut Elections Database » 2022 Nov 8 :: General Election :: Governor :: State of Connecticut". State of Connecticut Elections Database. Archived from the original on December 28, 2024. Retrieved January 25, 2025. 
- ^ "State of Connecticut Elections Database » 2022 Nov 8 :: General Election :: Attorney General :: State of Connecticut". State of Connecticut Elections Database. Archived from the original on December 28, 2024. Retrieved January 25, 2025. 
- ^ "State of Connecticut Elections Database » 2022 Nov 8 :: General Election :: Secretary of the State :: State of Connecticut". State of Connecticut Elections Database. Archived from the original on December 28, 2024. Retrieved January 25, 2025. 
- ^ "State of Connecticut Elections Database » 2022 Nov 8 :: General Election :: Treasurer :: State of Connecticut". State of Connecticut Elections Database. Archived from the original on December 28, 2024. Retrieved August 21, 2024. 
- ^ "State of Connecticut Elections Database » 2022 Nov 8 :: General Election :: Comptroller :: State of Connecticut". State of Connecticut Elections Database. Archived from the original on December 28, 2024. Retrieved August 21, 2024. 
- ^ "Statement of Vote" (PDF). Secretary of the State of Connecticut. Archived (PDF) from the original on April 1, 2025. Retrieved March 18, 2025. 
- ^ "2022 General Election - Representative in Congress - District 3". Connecticut Secretary of State. 
- ^ "Connecticut Third Congressional District Election Results". The New York Times. November 5, 2024. 
    41°23′07″N 72°52′39″W / 41.38528°N 72.87750°W / 41.38528; -72.87750