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Illinois's 6th congressional district
Interactive map of district boundaries since January 3, 2023
Representative	Sean Casten D–Downers Grove
Area	230.0 mi2 (596 km2)
Distribution	99.4% urban 0.6% rural
Population (2024)	764,465
Median household income	$96,658[1]
Ethnicity	72.1%White 13.6%Hispanic 5.8%Asian 5.3%Black 2.7%Two or more races 0.4% other
Cook PVI	D+3[2]

Illinois's 6th congressional district covers parts ofCook andDuPage counties. It has been represented byDemocratSean Casten since 2019.

• Chicago – 2,665,039
• Orland Park – 58,703
• Oak Lawn – 58,362
• Tinley Park – 55,971
• Wheaton – 53,970
• Downers Grove – 50,247
• Elmhurst 45,786
• Lombard – 44,476
• Addison – 35,702
• Burbank – 29,439
• Glen Ellyn – 28,846
• Westmont – 24,429
• Lisle – 24,223
• Villa Park – 22,263
• Darien – 22,011
• Evergreen Park – 19,943
• Alsip – 19,063
• Palos Hills – 18,530
• Hinsdale – 17,395
• Bridgeview – 17,027
• La Grange – 16,321
• Hickory Hills – 14,505
• Chicago Ridge – 14,433
• Midlothian – 14,325
• Western Springs – 13,629
• Justice – 12,600
• Palos Heights – 12,068
• Summit – 11,161
• Burr Ridge – 11,192
• Worth – 10,970
• Crestwood – 10,826

• Willowbrook – 9,238
• Clarendon Hills – 8,702
• Oak Brook – 8,163
• Orland Hills – 6,893
• Countryside – 6,420
• Willow Springs – 5,857
• Palos Park – 4,899
• Robbins – 4,629
• Hometown – 4,343
• Indian Head Park – 4,065
• Oakbrook Terrace – 2,751

Due to the 2020 redistricting, the district will become a more compact district in southern Cook County and eastern DuPage County, as well as part of the Far Southwest Side ofChicago. The 6th district takes in theChicago neighborhoods ofBeverly; most ofMount Greenwood; and westernGarfield Ridge andClearing.

Outside of Chicago, the 6th district takes in theCook County communities ofOrland Hills,Western Springs,Orland Park,Palos Hills,Hickory Hills,Chicago Ridge,Bridgeview,Indian Head Park,Merrionette Park,Hometown,Worth,Palos Heights,Palos Park,Bedford Park,Justice,Hodgkins, andCountryside; northernTinley Park; the western and eastern portions ofEvergreen Park; northwesternCrestwood; most ofOak Lawn,Orland Park,Burr Ridge (shared with DuPage County), andWillow Springs; westernAlsip; southernLa Grange; part ofRobbins,Midlothian,Burbank,Summit, andHinsdale.

DuPage County is split between this district, the3rd district,4th district, and the11th district. The 6th and 3rd districts are partitioned by 59th St, Illinois Highway 83, 55th St, Walker Ave, Park Ave, Golf Ave, Jane Ct, Prospect Ave, Chicago Ave, Middaugh Rd, Naperville Rd, Hinsdale Golf Course, Illinois Highway 34, Robert Kingery Highway, Oak Brook Rd, Regent Dr, 22nd St, Castle Dr, Illinois Highway 38, Fillmore St, Adams St, Madison St, Euclid Ave, York St, and Illinois Highway 64.

The 6th and 4th districts are partitioned by Grand Ave, Frontage Ave, Fullerton Ave, Harvard Ave, Armitage Ave, Addison Rd, Illinois Highway 64, Westmore Ave/Berman Ave, Plymouth St, Lincoln St, Vermont St, Westwood Ave, Le Moyne Ave/Illinois Highway 64, Highway 355, Union Pacific Railroad, North Path, President St, and Naperville Rd.

The 6th and 11th district are partitioned by Illinois Highway 23, Highway 88, Fender Rd, Ogden Ave, Beau Bren Blvd, Eugenia Dr, Arlington Ave, Oak Hill Park, Oak Hill Dr, Yackley Ave, Maple Ave, Abbey Dr, Four Lakes Ave, River Bend Golf Course, Riverview Dr, Kohl Rd, Illinois Highway 53, 61st St, Essex Rd, Summerhill Park, Prentiss Creek, 59th St, Chase Ave, 63rd St, Highway 355, Wheeler St, Woodward Ave, 71st Ave, Illinois Highway 33, Illinois Highway 9, 87th St, Meyer Woods Park, Wards Creek, Highway 55, Cass Ave, and 91st St. The 6th district takes in the communities ofDowners Grove,Villa Park,Westmont,Willowbrook, andOakbrook Terrace; most ofElmhurst,Lisle,Darien,Burr Ridge (shared with Cook County),Clarendon Hills, andLombard; part ofAddison; westernOak Brook; half ofWheaton east of Illinois Highway 23 and south of the Union Pacific Railroad; the portion ofGlen Ellyn south of the Union Pacific Railroad.

After the 2011 redistricting which followed the2010 census, the district included portions ofCook,DuPage,Kane,Lake andMcHenry counties. All or parts ofAlgonquin,Barrington,Barrington Hills,Bartlett,Burr Ridge,Carol Stream,Carpentersville,Cary,Clarendon Hills,Crystal Lake,Darien,Deer Park,Downers Grove,Elgin,East Dundee,Forest Lake,Fox River Grove,Gilberts, Illinois,Glen Ellyn,Hawthorn Woods,Hinsdale,Hoffman Estates,Inverness,Kildeer,Lake Barrington,Lake in the Hills,Lake Zurich,Lakewood,Lisle,Lombard,Long Grove,Naperville,North Barrington,Oak Brook,Oakbrook Terrace,Oakwood Hills,Palatine,Port Barrington,Rolling Meadows,Sleepy Hollow,South Barrington,South Elgin,St. Charles,Tower Lakes,Trout Valley,Warrenville,Wayne,West Chicago,West Dundee,Westmont,Wheaton,Willowbrook andWinfield are included.

Representative	Notes
Thompson Campbell	Elected the 9thIllinois Secretary of State (1843–1846)
Thomas L. Harris	Served as amajor for theU.S. Army during theMexican–American War (1846–1847)
Edward Dickinson Baker	Served as acolonel for the U.S. Army during the Mexican–American War (1846–1847) ElectedUnited States Senator fromOregon (1860–1861) Served as a colonel for theUnion Army during theAmerican Civil War (1861)
John Alexander McClernand	Served as abrigadier general andmajor general of the Union Army during the American Civil War (1861–1864)
Richard Yates	Elected the 13thIllinois Governor (1861–1865) ElectedUnited States Senator from Illinois (1865–1871)
Robert R. Hitt	Appointed the 13thUnited States Assistant Secretary of State (1881) Served as a regent of theSmithsonian Institution (1893–1906)
William Lorimer	Elected United States Senator fromIllinois (1909–1912)
Henry Hyde	Primary author of theHyde Amendment
Peter Roskam	Served asU.S. House Majority Chief Deputy Whip (2011–2014)

Member	Party	Years	Cong ress	Electoral history	District location
District created March 4, 1843
Joseph P. Hoge (Galena)	Democratic	March 4, 1843 – March 3, 1847	28th 29th	Elected in 1842. Re-elected in 1844. Retired.
Thomas J. Turner (Freeport)	Democratic	March 4, 1847 – March 3, 1849	30th	Elected in 1846. [data missing]
Edward D. Baker (Galena)	Whig	March 4, 1849 – March 3, 1851	31st	Elected in 1848. [data missing]
Thompson Campbell (Galena)	Democratic	March 4, 1851 – March 3, 1853	32nd	Elected in 1850. [data missing]
Richard Yates (Jacksonville)	Whig	March 4, 1853 – March 3, 1855	33rd	Redistricted from the7th district andre-elected in 1852. [data missing]
Thomas L. Harris (Petersburg)	Democratic	March 4, 1855 – November 24, 1858	34th 35th	Re-elected in 1854. Re-elected in 1856. Re-elected in 1858 Died.
Vacant		November 24, 1858 – January 4, 1859	35th
Charles D. Hodges (Carrollton)	Democratic	January 4, 1859 – March 3, 1859	35th	Elected to finish Harris's term in the 35th Congress. Retired.
Vacant		March 4, 1859 – November 8, 1859	36th
John A. McClernand (Springfield)	Democratic	November 8, 1859 – October 28, 1861	36th 37th	Elected to finish Harris's term in the 36th Congress. Re-elected in 1860. Resigned to accept commission asbrigadier general of volunteers for service in theCivil War.
Vacant		October 28, 1861 – December 12, 1861	37th
Anthony L. Knapp (Jerseyville)	Democratic	December 12, 1861 – March 3, 1863		Elected to finish McClernand's term. Redistricted to the10th district.
Jesse O. Norton (Joliet)	Republican	March 4, 1863 – March 3, 1865	38th	Elected in 1862. [data missing]
Burton C. Cook (Ottawa)	Republican	March 4, 1865 – August 26, 1871	39th 40th 41st 42nd	Re-elected in 1864. Re-elected in 1866. Re-elected in 1868. Re-elected in 1870. Resigned.
Vacant		August 26, 1871 – December 4, 1871	42nd
Henry Snapp (Joliet)	Republican	December 4, 1871 – March 3, 1873		Elected to finish Cook's term. [data missing]
John B. Hawley (Rock Island)	Republican	March 4, 1873 – March 3, 1875	43rd	Redistricted from the4th district andre-elected in 1872. [data missing]
Thomas J. Henderson (Princeton)	Republican	March 4, 1875 – March 3, 1883	44th 45th 46th 47th	Elected in 1874. Re-elected in 1876. Re-elected in 1878. Re-elected in 1880. Redistricted to the7th district.
Robert R. Hitt (Mount Morris)	Republican	March 4, 1883 – March 3, 1895	48th 49th 50th 51st 52nd 53rd	Redistricted from the5th district andre-elected in 1882. Re-elected in 1884. Re-elected in 1886. Re-elected in 1888. Re-elected in 1890. Re-elected in 1892. Redistricted to the9th district.
Edward D. Cooke (Chicago)	Republican	March 4, 1895 – June 24, 1897	54th 55th	Elected in 1894. Re-elected in 1896. Died.
Vacant		June 24, 1897 – November 23, 1897	55th
Henry S. Boutell (Chicago)	Republican	November 23, 1897 – March 3, 1903	55th 56th 57th	Elected to finish Cooke's term. Re-elected in 1898. Re-elected in 1900. Redistricted to the9th district.
William Lorimer (Chicago)	Republican	March 4, 1903 – June 17, 1909	58th 59th 60th 61st	Elected in 1902. Re-elected in 1904. Re-elected in 1906. Re-elected in 1908. Resigned when elected toUS Senate.
Vacant		June 17, 1909 – November 23, 1909	61st
William Moxley (Chicago)	Republican	November 23, 1909 – March 3, 1911		Elected to finish Lorimer's term. [data missing]
Edmund J. Stack (Chicago)	Democratic	March 4, 1911 – March 3, 1913	62nd	Elected in 1910. [data missing]
James McAndrews (Chicago)	Democratic	March 4, 1913 – March 3, 1921	63rd 64th 65th 66th	Elected in 1912. Re-elected in 1914. Re-elected in 1916. Re-elected in 1918. [data missing]
John J. Gorman (Chicago)	Republican	March 4, 1921 – March 3, 1923	67th	Elected in 1920. [data missing]
James R. Buckley (Chicago)	Democratic	March 4, 1923 – March 3, 1925	68th	Elected in 1922. [data missing]
John J. Gorman (Chicago)	Republican	March 4, 1925 – March 3, 1927	69th	Elected in 1924. [data missing]
James T. Igoe (Chicago)	Democratic	March 4, 1927 – March 3, 1933	70th 71st 72nd	Elected in 1926. Re-elected in 1928. Re-elected in 1930. [data missing]
Thomas J. O'Brien (Chicago)	Democratic	March 4, 1933 – January 3, 1939	73rd 74th 75th	Elected in 1932. Re-elected in 1934. Re-elected in 1936. [data missing]
A. F. Maciejewski (Cicero)	Democratic	January 3, 1939 – December 8, 1942	76th 77th	Elected in 1938. Re-elected in 1940. Resigned.
Vacant		December 8, 1942 – January 3, 1943	77th
Thomas J. O'Brien (Chicago)	Democratic	January 3, 1943 – April 14, 1964	78th 79th 80th 81st 82nd 83rd 84th 85th 86th 87th 88th	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. Re-elected in 1958. Re-elected in 1960. Re-elected in 1962. Died.
Vacant		April 14, 1964 – January 3, 1965	88th
Daniel J. Ronan (Chicago)	Democratic	January 3, 1965 – August 13, 1969	89th 90th 91st	Elected in 1964. Re-elected in 1966. Re-elected in 1968. Died.
Vacant		August 13, 1969 – November 3, 1970	91st
George W. Collins (Chicago)	Democratic	November 3, 1970 – December 8, 1972	91st 92nd	Elected to finish Ronan's term. Re-elected in 1970. Died.
Vacant		December 8, 1972 – January 3, 1973	92nd
Harold R. Collier (Riverside)	Republican	January 3, 1973 – January 3, 1975	93rd	Redistricted from the10th district andre-elected in 1972. Retired.
Henry Hyde (Wood Dale)	Republican	January 3, 1975 – January 3, 2007	94th 95th 96th 97th 98th 99th 100th 101st 102nd 103rd 104th 105th 106th 107th 108th 109th	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. 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. Retired.
					1983–1993 [data missing]
					1993–2003 [data missing]
					2003–2013
Peter Roskam (Wheaton)	Republican	January 3, 2007 – January 3, 2019	110th 111th 112th 113th 114th 115th	Elected in 2006. Re-elected in 2008. Re-elected in 2010. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Lost re-election.
					2013–2023
Sean Casten (Downers Grove)	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 congressional districts
• Illinois's 6th congressional district election, 2006
• 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

• 6th District of Illinois,The Washington Post
• 6th District Fact SheetArchived July 17, 2011, at theWayback Machine, U.S. Census Bureau

42°10′30″N88°13′12″W / 42.17500°N 88.22000°W /42.17500; -88.22000

• Congressional districts of Illinois
• Government of Cook County, Illinois
• DuPage County, Illinois
• Constituencies established in 1843
• 1843 establishments in Illinois

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