Illinois's 8th congressional district
Interactive map of district boundaries since January 3, 2023
Representative	Raja Krishnamoorthi D–Schaumburg
Area	291.5 sq mi (755 km2)
Distribution	100.0% urban 0.0% rural
Population (2024)	752,591
Median household income	$96,230[1]
Ethnicity	54.4%White 23.8%Hispanic 14.3%Asian 4.3%Black 2.8%Two or more races 0.5% other
Cook PVI	D+5[2]

The8th congressional district of Illinois is acongressional district in theU.S. state ofIllinois that has been represented byDemocratRaja Krishnamoorthi since 2017.

The congressional district covers parts ofCook County,DuPage County andKane County, as of the 2011 redistricting which followed the2010 United States census. All or parts ofAddison,Arlington Heights,Barrington Hills,Bloomingdale,Carol Stream,Carpentersville,East Dundee,Elgin,Elk Grove Village,Glendale Heights,Hanover Park,Hoffman Estates,Lombard,Palatine,Rolling Meadows,Roselle,Schaumburg,South Elgin,Streamwood,Villa Park andWood Dale are included.^[3] These boundaries became effective on January 3, 2013.

• Chicago – 2,665,039
• Elgin – 114,797
• Schaumburg – 78,723
• Arlington Heights – 77,676
• Palatine – 67,908
• Des Plaines – 60,675
• Mount Prospect – 56,852
• Hoffman Estates – 52,530
• Barlett – 41,105
• Carol Stream – 39,854
• Streamwood – 39,577
• Carpentersville – 39,983
• Hanover Park – 37,470
• Addison – 35,702
• Glendale Heights – 33,176
• St. Charles – 33,081
• Elk Grove Village – 32,812
• Algonquin – 29,700
• Glen Ellyn – 28,846
• Huntley – 28,008
• Batavia – 26,098
• Rolling Meadows – 24,200
• South Elgin – 23,865
• Roselle – 22,897
• Bloomingdale – 22,382
• Geneva – 21,393
• Norridge – 15,251
• Wood Dale – 14,012
• Pingree Grove – 10,365

• Itasca – 9,543
• Gilberts – 8,366
• West Dundee – 7,686
• Hampshire – 7,667
• Inverness – 7,616
• South Barrington – 5,077
• Barrington Hills – 4,114
• Rosemont – 3,952
• Sleepy Hollow – 3,214
• East Dundee – 3,152

As of the 2020 redistricting, this district will still be based partially in northernCook County, and now parts of northernDuPage County and northeastKane County, as well as part of theChicago neighborhood ofO'Hare.

The 8th district takes in theCook County communities ofSchaumburg (shared with DuPage County),Rosemont,Rolling Meadows,South Barrington, andEast Dundee (shared with Kane County); most ofHoffman Estates,Streamwood, andElgin (shared with Kane County); half ofDes Plaines; the majority ofElk Grove Village west of Tome Rd (shared with DuPage County); part ofPalatine,Norridge,Rosemont,Arlington Heights,Hanover Park (shared with DuPage County), andInverness; and part ofMount Prospect between Dempster St and W Lonnquist Blvd.

DuPage County is split between this district and the3rd district. They are partitioned by Bartlett Rd, Old Wayne Golf Course, St Charles Rd, Fair Oaks Rd, Timber Ln, Woodcreek Ln N, Wayne Oaks Dam Reservoir, Morton Rd, Pawnee Dr, County Farm Rd, Highway 64, Gary Ave Della Ave, West St, Geneva Rd, Bloomingdale's Rd, Glendale Lakes Golf Club, President St, Gilberto St, Schubert Ave, Opal Ave, Stevenson Dr, Highway 4, Polo Club Dr, Canadian National Railway, East Branch Park, Army Trail Rd, Belmont Pl, Addison Trail High School, Woodland Ave, 7th Ave, Lake St, 3rd Ave, Eggerding Dr, Mill Rd, Highway 290, Addison Rd, Oak Meadows Golf & Banquets, Central Ave, Canadian Pacific Railway, Wood Dale Rd, Elmhurt St, and Lively Blvd. The 8th district takes in the communities ofBloomingdale,Schaumburg (shared with Cook County),Roselle, andItasca; most ofCarol Stream; the majority ofElk Grove Village west of Tome Rd (shared with DuPage County); part ofHanover Park (shared with Cook County); easternBartlett; westernWood Dale; northwesternAddison; part ofGlen Ellyn; and part of northernGlendale Heights.

Kane County is split between this district and the11th district. They are partitioned by Illinois Highway 47, Regency Parkway, Farm Hill Dr, Del Webb Blvd, Jane Adams Memorial Tollway, Sandwald Rd, Ridgecrest Dr, Brier Hill Rd/Illinois Highway 47, Coombs Rd, Shadow Hill Dr, Campton Hills Dr, West Main St, South Tyler Rd, Division St, Fox River, North Washington Ave, Douglas Rd, Orion Rd, and East Fabyan Parkway. The 8th district takes in the communities ofEast Dundee (shared with Cook County),West Dundee,Carpentersville,Sleepy Hollow,South Elgin,Gilberts,Pingree Grove; most ofElgin (shared with Cook County); half ofSt. Charles; southernAlgonquin; westernWayne andBarrington Hills; easternHampshire; southeasternHuntley; a portion ofGeneva east of the Fox River; and part ofBatavia.

Name	Party	Years	Cong– ress	Electoral history	Counties
District created March 4, 1853.
William Henry Bissell (Belleville)	Independent Democratic	March 4, 1853 – March 3, 1855	33rd	Redistricted from the1st district andre-elected in 1852. Retired.	1853–1863 [data missing]
Vacant		March 4, 1855 – November 4, 1856	34th	Representative-electLyman Trumbull waselected to the U.S. Senate on February 8, 1855.[5]
James L. D. Morrison (McLeansboro)	Democratic	November 4, 1856 – March 3, 1857	34th	Elected to finish Trumbull's term. Retired.
Robert Smith (Alton)	Democratic	March 4, 1857 – March 3, 1859	35th	Elected in 1856. Lost renomination.
Philip B. Fouke (Belleville)	Democratic	March 4, 1859 – March 3, 1863	36th 37th	Elected in 1858. Re-elected in 1860. Retired.
John T. Stuart (Springfield)	Democratic	March 4, 1863 – March 3, 1865	38th	Elected in 1862. Lost re-election.	1863–1873 DeWitt,Livingston,Logan,McLean,Sangamon,Tazewell, andWoodford
Shelby Moore Cullom (Springfield)	Republican	March 4, 1865 – March 3, 1871	39th 40th 41st	Elected in 1864. Re-elected in 1866. Re-elected in 1868. Retired.
James Carroll Robinson (Springfield)	Democratic	March 4, 1871 – March 3, 1873	42nd	Elected in 1870. Redistricted to the12th district.
Greenbury L. Fort (Lacon)	Republican	March 4, 1873 – March 3, 1881	43rd 44th 45th 46th	Elected in 1872. Re-elected in 1874. Re-elected in 1876. Re-elected in 1878. Retired.	1873–1883 Ford,Iroquois,Kankakee,Livingston,Marshall, andWoodford
Lewis E. Payson (Pontiac)	Republican	March 4, 1881 – March 3, 1883	47th	Elected in 1880. Redistricted to the9th district.
William Cullen (Ottawa)	Republican	March 4, 1883 – March 3, 1885	48th	Redistricted from the7th district andre-elected in 1882. Lost renomination.	1883–1895 DuPage,Grundy,Kendall,LaSalle, andWill
Ralph Plumb (Streator)	Republican	March 4, 1885 – March 3, 1889	49th 50th	Elected in 1884. Re-elected in 1886. Retired.
Charles A. Hill (Joliet)	Republican	March 4, 1889 – March 3, 1891	51st	Elected in 1888. Lost re-election.
Lewis Steward (Plano)	Democratic	March 4, 1891 – March 3, 1893	52nd	Elected in 1890. Lost re-election.
Robert A. Childs (Hinsdale)	Republican	March 4, 1893 – March 3, 1895	53rd	Elected in 1892. Retired.
Albert J. Hopkins (Aurora)	Republican	March 4, 1895 – March 3, 1903	54th 55th 56th 57th	Redistricted from the5th district andre-elected in 1894. Re-elected in 1896. Re-elected in 1898. Re-elected in 1900. Retired torun for U.S. senator.	1895–1903 DeKalb,DuPage,Grundy,Kane,Kendall, andMcHenry
William F. Mahoney (Chicago)	Democratic	March 4, 1903 – December 27, 1904	58th	Redistricted from the5th district andre-elected in 1902. Died.	1903–1913 Cook
Vacant		December 27, 1904 – March 3, 1905	58th
Charles McGavin (Chicago)	Republican	March 4, 1905 – March 3, 1909	59th 60th	Elected in 1904. Re-elected in 1906. Retired.
Thomas Gallagher (Chicago)	Democratic	March 4, 1909 – March 3, 1921	61st 62nd 63rd 64th 65th 66th	Elected in 1908. Re-elected in 1910. Re-elected in 1912. Re-elected in 1914. Re-elected in 1916. Re-elected in 1918. Retired.
					1913–1949 Cook
Stanley H. Kunz (Chicago)	Democratic	March 4, 1921 – March 3, 1931	67th 68th 69th 70th 71st	Elected in 1920. Re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Lost re-election.
Peter C. Granata (Chicago)	Republican	March 4, 1931 – April 5, 1932	72nd	Lost contested election.
Stanley H. Kunz (Chicago)	Democratic	April 5, 1932 – March 3, 1933	72nd	Won contested election. Lost renomination.
Leo Kocialkowski (Chicago)	Democratic	March 4, 1933 – January 3, 1943	73rd 74th 75th 76th 77th	Elected in 1932. Re-elected in 1934. Re-elected in 1936. Re-elected in 1938. Re-elected in 1940. Lost renomination.
Thomas S. Gordon (Chicago)	Democratic	January 3, 1943 – January 3, 1959	78th 79th 80th 81st 82nd 83rd 84th 85th	Elected in 1942. Re-elected in 1944. Re-elected in 1946. Re-elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Retired.
					1949–1953 Cook
					1953–1963 Cook
Dan Rostenkowski (Chicago)	Democratic	January 3, 1959 – January 3, 1993	86th 87th 88th 89th 90th 91st 92nd 93rd 94th 95th 96th 97th 98th 99th 100th 101st 102nd	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. Re-elected in 1980. Re-elected in 1982. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Re-elected in 1990. Redistricted to the5th district.
					1963–1967 Cook
					1967–1973 Cook
					1973–1983 Cook
					1983–1993 Cook
Phil Crane (Wauconda)	Republican	January 3, 1993 – January 3, 2005	103rd 104th 105th 106th 107th 108th	Redistricted from the12th district andre-elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Re-elected in 2000. Re-elected in 2002. Lost re-election.	1993–2003 Cook andLake
					2003–2013 Cook,Lake, andMcHenry
Melissa Bean (Barrington)	Democratic	January 3, 2005 – January 3, 2011	109th 110th 111th	Elected in 2004. Re-elected in 2006. Re-elected in 2008. Lost re-election.
Joe Walsh (McHenry)	Republican	January 3, 2011 – January 3, 2013	112th	Elected in 2010. Lost re-election.
Tammy Duckworth (Hoffman Estates)	Democratic	January 3, 2013 – January 3, 2017	113th 114th	Elected in 2012. Re-elected in 2014. Retired torun for U.S. senator.	2013–2023 Cook,DuPage, andKane
Raja Krishnamoorthi (Schaumburg)	Democratic	January 3, 2017 – present	115th 116th 117th 118th 119th	Elected in 2016. Re-elected in 2018. Re-elected in 2020. Re-elected in 2022. Re-elected in 2024. Retiring to run forU.S Senate.
					2023–present Cook,DuPage, andKane

Incumbent Representative Joe Walsh was drawn out of the district for 2012 by 2011 redistricting, although a candidate is not required to live in the district to be eligible to run for a seat in Congress.^[6]DemocratRaja Krishnamoorthi of Hoffman Estates announced his candidacy for the seat in late May 2011. In July 2011, DemocratTammy Duckworth also announced plans to run for the seat.^[7] Duckworth won the Democratic nomination on March 20, 2012. Duckworth defeated Walsh in the general election on November 6, 2012.

• 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 8th District of Illinois
• U.S. Census Bureau - 8th District Fact SheetArchived September 28, 2011, at theWayback Machine
• OpenSecrets.org political contributions and spending
• CBS county-by-county return of 2006 votes

42°00′35″N88°05′48″W / 42.00972°N 88.09667°W /42.00972; -88.09667

• Congressional districts of Illinois
• Government of Cook County, Illinois
• Constituencies established in 1853
• 1853 establishments in Illinois

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