Illinois's 14th congressional district
Interactive map of district boundaries since January 3, 2023
Representative	Lauren Underwood D–Naperville
Area	1,999.6 sq mi (5,179 km2)
Distribution	89.9% urban 10.1% rural
Population (2024)	766,577
Median household income	$98,492[1]
Ethnicity	58.8%White 22.8%Hispanic 9.3%Black 5.2%Asian 3.4%Two or more races 0.4% other
Cook PVI	D+3[2]

The14th congressional district of Illinois is currently represented by DemocratLauren Underwood. It is located in northernIllinois, surrounding the outer northern and western suburbs ofChicago.

Joseph Gurney Cannon, who also served asSpeaker of the United States House of Representatives during four congresses and after whom theCannon House Office Building is named, represented the district early in his career (1873–83), although he was representing the18th district when he was speaker from 1903 to 1911.

The 14th district was represented from 1987 to 2007 by RepublicanDennis Hastert, who served as Speaker of the House during the106th through109th Congresses.

Hastert resigned from Congress in November 2007 and on March 8, 2008, the2008 Illinois's 14th congressional district special election was held to fill the vacancy. DemocratBill Foster defeated RepublicanJim Oberweis by 52.5% to 47.5%. In theNovember 2008 regular election, Foster won a full two-year term, defeating Oberweis once again. Foster failed to win re-election in 2010. RepublicanRandy Hultgren won the seat for the GOP and was sworn in when the112th Congress convened. Hultgren was re-elected in the2012 election, the2014 election, and the2016 election. In the2018 election, Democratic nomineeLauren Underwood defeated Hultgren, 52.5 to 47.5 percent, thus flipping theCook Partisan Voting Index Republican +5 district to theDemocratic Party.^[3]

• Aurora – 180,542
• Joliet – 150,362
• Naperville – 149,540
• Bolingbrook – 73,922
• Plainfield – 44,762
• DeKalb – 40,290
• Romeoville – 39,863
• Oswego – 34,585
• Lockport – 26,094
• Yorkville – 22,594
• Crest Hill – 20,459
• Montgomery – 20,262
• Ottawa – 18,840
• Sycamore – 18,577
• North Aurora – 18,261
• Shorewood – 18,186
• Lemont – 17,629
• Minooka – 12,758
• Plano – 11,847

• Peru – 9,896
• LaSalle – 9,582
• Sugar Grove – 9,278
• Sandwich – 7,221
• Mendota – 7,061
• Spring Valley – 5,582
• Lake Holiday – 5,687
• Marseilles – 4,845
• Cortland – 4,398
• Oglesby – 3,712
• Ingalls Park – 3,460
• Ridgewood – 2,956
• Preston Heights – 2,898

As of the 2020 redistricting, the district will be based inNorthern Illinois, and takes inKendall, the southern half ofDeKalb county, northernLaSalle County, northeastPutnam County, and part ofWill,Kane, andBureau Counties.

DeKalb County is split between this district, the11th district, and the16th district. They are partitioned by Gillis Rd, Anjali Ct, W Mortel Rd, Kishwaukee River, Bass Line Rd, Illinois Highway 23, Whipple Rd, Plank Rd, Swanson Rd, and Darnell Rd. The 14th district takes in the municipalities ofSycamore,DeKalb,Sandwich,Malta,Cortland,Shabbona,Waterman,Hinckley,Somonauk (shared with LaSalle County), andSandwich (shared with Kendall County); most ofMaple Park; and half ofLee.

Bureau County is split between this district and the16th district. They are partitioned by Illinois Highway 26, US Highway 180, 2400 St E, and 2400 Ave N. The 14th district takes in the municipalities ofSpring Valley,Cherry,DePue,Ladd,Seatonville,Bureau Junction,Dalzell,Hollowayville,Malden, andArlington; and part ofDover.

Putnam County is split between this district and the16th district. They are partitioned by Illinois River, S Front St, E High St, N 2nd St, E Court St, E Mulberry St, N 3rd St, N 4th St, N 6th St, E Sycamore St, S 5th St, Coffee Creek, Illinois Highway 26, and N 600th Ave. The 14th district takes in the municipalities ofGranville,Standard, andMark; and most ofHennepin.

Kane County is split between this district and the8th district and11th district. The 14th district takes in the communities ofBig Rock,Prestbury, andMontgomery (shared with Kendall County); southeasternAurora (shared with Kendall County); and part ofNorth Aurora andSugar Grove.

LaSalle County is split between this district and the16th district. They are partitioned by N 20th Rd, Vermillion River, Matthiessen State Park Central Road, E 8th Rd, N 24th Rd, E 12th Rd, N 2250th Rd, E 13th Rd, E 18th Rd, Oakwood Dr, and the Illinois River. The 14th district takes in the communities ofLaSalle,Ottawa,Oglesby,Peru,Earlville,Mendota,Cedar Point,North Utica,Naplate,Dayton,Wedron,Troy Grove,Triumph,Earlville,Harding,Leland,Serena,Sheridan,Millington (shared with Kendall County),Somonauk (shared with DeKalb County), andLake Holiday; half ofSeneca; and part ofTonica,Marseilles, andSeneca (shared withGrundy County).

Will County is split between this district, the1st district, and the11th district. The 14th and 1st districts are partitioned by West 135th St, High Rd, Chicago Sanitary & Ship Canal, Thornton St, East 9th St, Madison St, East 12th St, East Division St, South Farrell Rd, Midewin National Tail Grass Prairie, West Schweizer Rd, Channahon Rd, DuPage River, and Canal Road North. The 14th and 11th districts are partitioned by The 14th takes in the communities ofJoliet,Plainfield (shared with Kendall County),Shorewood,Crystal Lawns,Sunnyland,Crest Hill,Rockdale,Fairmont,Ridgewood,Ingalls Park, andPreston Heights; most ofRomeoville; southwesternNaperville; westernBolingbrook; westernLemont; easternElwood; and half ofLockport.

After the 2011 redistricting which followed the2010 census, meaning from the 2012 election on, thecongressional district covers parts of the counties ofDeKalb,DuPage,Kane,Kendall,Lake,McHenry andWill. The district includes all or parts of the cities ofAurora,Batavia,Campton Hills,Crystal Lake,Geneva,Huntley,McHenry,Naperville,St. Charles,North Aurora,Oswego,Plainfield,Plano,Sycamore,Warrenville,Wauconda,Woodstock, andYorkville.^[4]

IncumbentRandy Hultgren defeated Democratic challenger Dennis Anderson to keep his spot in theHouse of Representatives.

This election was a repeat of the 2012 election, and Hultgren retained his seat.

Hultgren wins again, this time against Democrat Jim Walz.

Hultgren lost his reelection bid to Democrat Lauren Underwood.

Member	Party	Years	Cong ress	Electoral history	Location
District created March 4, 1873
Joseph G. Cannon (Danville)	Republican	March 4, 1873 – March 3, 1883	43rd 44th 45th 46th 47th	Elected in 1872. Re-elected in 1874. Re-elected in 1876. Re-elected in 1878. Re-elected in 1880. Redistricted to the15th district.	1873 – 1883 [data missing]
Jonathan H. Rowell (Bloomington)	Republican	March 4, 1883 – March 3, 1891	48th 49th 50th 51st	Elected in 1882. Re-elected in 1884. Re-elected in 1886. Re-elected in 1888. Lost re-election.
Owen Scott (Bloomington)	Democratic	March 4, 1891 – March 3, 1893	52nd	Elected in 1890. Lost re-election.
Benjamin F. Funk (Bloomington)	Republican	March 4, 1893 – March 3, 1895	53rd	Elected in 1892. Retired.	1893 – 1901 Included Putnam, Marshall, Peoria, Tazewell and Mason counties.
Joseph V. Graff (Peoria)	Republican	March 4, 1895 – March 3, 1903	54th 55th 56th 57th	Elected in 1894. Re-elected in 1896. Re-elected in 1898. Re-elected in 1900. Redistricted to the16th district.
					1901 – 1947 Included Rock Island, Mercer, Warren, Henderson, Hancock and Mc Donough counties.
Benjamin F. Marsh (Warsaw)	Republican	March 4, 1903 – June 2, 1905	58th 59th	Elected in 1902. Re-elected in 1904. Died.
Vacant		June 2, 1905 – November 7, 1905	59th
James McKinney (Aledo)	Republican	November 7, 1905 – March 3, 1913	59th 60th 61st 62nd	Elected to finish Marsh's term. Re-elected in 1906. Re-elected in 1908. Re-elected in 1910. Retired.
Clyde H. Tavenner (Cordova)	Democratic	March 4, 1913 – March 3, 1917	63rd 64th	Elected in 1912. Re-elected in 1914. Lost re-election.
William J. Graham (Aledo)	Republican	March 4, 1917 – June 7, 1924	65th 66th 67th 68th	Elected in 1916. Re-elected in 1918. Re-elected in 1920. Re-elected in 1922. Resigned when appointed presiding judge of the U.S. Court of Appeals.
Vacant		June 7, 1924 – March 3, 1925	68th
John C. Allen (Monmouth)	Republican	March 4, 1925 – March 3, 1933	69th 70th 71st 72nd	Elected in 1924. Re-elected in 1926. Re-elected in 1928. Re-elected in 1930. Lost re-election.
Chester C. Thompson (Rock Island)	Democratic	March 4, 1933 – January 3, 1939	73rd 74th 75th	Elected in 1932. Re-elected in 1934. Re-elected in 1936. Lost re-election.
Anton J. Johnson (Macomb)	Republican	January 3, 1939 – January 3, 1949	76th 77th 78th 79th 80th	Elected in 1938. Re-elected in 1940. Re-elected in 1942. Re-elected in 1944. Re-elected in 1946. Redistricted to the20th district and retired there.
					1947 – 1961 IncludedKane,DuPage andMcHenry counties.
Chauncey W. Reed (West Chicago)	Republican	January 3, 1949 – February 9, 1956	81st 82nd 83rd 84th	Elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Died.
Vacant		February 9, 1956 – January 3, 1957	84th
Russell W. Keeney (Wheaton)	Republican	January 3, 1957 – January 11, 1958	85th	Elected in 1956. Died.
Vacant		January 11, 1958 – January 3, 1959
Elmer J. Hoffman (Wheaton)	Republican	January 3, 1959 – January 3, 1965	86th 87th 88th	Elected in 1958. Re-elected in 1960. Re-elected in 1962. Retired.
					1961 – 1963 [data missing]
					1963 – 1973 [data missing]
John N. Erlenborn (Glen Ellyn)	Republican	January 3, 1965 – January 3, 1983	89th 90th 91st 92nd 93rd 94th 95th 96th 97th	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. Re-elected in 1980. Redistricted to the13th district.
					1973 – 1983 [data missing]
Tom Corcoran (Ottawa)	Republican	January 3, 1983 – November 28, 1984	98th	Redistricted from the15th district andre-elected in 1982. Resigned torun for U.S. Senator.	1983 – 1993 [data missing]
Vacant		November 28, 1984 – January 3, 1985
John E. Grotberg (St. Charles)	Republican	January 3, 1985 – November 15, 1986	99th	Elected in 1984. Died.
Vacant		November 15, 1986 – January 3, 1987
Dennis Hastert (Yorkville)	Republican	January 3, 1987 – November 26, 2007	100th 101st 102nd 103rd 104th 105th 106th 107th 108th 109th 110th	Elected in 1986. Re-elected in 1988. Re-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. Resigned.
					1993 – 2003 [data missing]
					2003 – 2013
Vacant		November 26, 2007 – March 8, 2008	110th
Bill Foster (Batavia)	Democratic	March 8, 2008 – January 3, 2011	110th 111th	Elected to finish Hastert's term. Re-elected in 2008. Lost re-election.
Randy Hultgren (Plano)	Republican	January 3, 2011 – January 3, 2019	112th 113th 114th 115th	Elected in 2010. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Lost re-election.
					2013–2023
Lauren Underwood (Naperville)	Democratic	January 3, 2019 – present	116th 117th 118th 119th	Elected in 2018. Re-elected in 2020. Re-elected in 2022. Re-elected in 2024.
					2023–present

• Illinois's 14th congressional district special election, 2008
• Illinois's congressional districts
• List of United States congressional districts

• Martis, Kenneth C. (1989).The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
• Martis, Kenneth C. (1982).The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
• Congressional Biographical Directory of the United States 1774–present

• Washington Post page on the 14th District of Illinois
• U.S. Census Bureau - 14th District Fact SheetArchived July 17, 2011, at theWayback Machine

• Congressional districts of Illinois
• DuPage County, Illinois
• Kane County, Illinois
• DeKalb County, Illinois
• Constituencies established in 1873
• 1873 establishments in Illinois
• Dennis Hastert

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