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Illinois's 15th congressional district
Interactive map of district boundaries since January 3, 2023
Representative	Mary Miller R–Oakland
Area	17,008.6 mi2 (44,052 km2)
Distribution	51.4% rural 48.6% urban
Population (2024)	739,197
Median household income	$74,855[1]
Ethnicity	89.7%White 3.4%Two or more races 2.9%Black 2.8%Hispanic 0.7%Asian 0.5% other
Cook PVI	R+20[2]

Illinois' 15th congressional district is aU.S. congressional district located in the state ofIllinois. Situated in central Illinois, the district is predominantly rural. It was located in eastern and southeastern Illinois until 2022. It has been represented byRepublicanMary Miller since 2021.

With aCook Partisan Voting Index rating of R+20, it is one of the most Republican-leaning districts in Illinois.^[2] In most of the district, there are no elected Democrats above the county level, andDonald Trump carried over 65% of the district's vote in all of his bids for president.

Thecongressional district covers parts ofBond,Champaign,Ford andMadison counties, and all ofClark,Clay,Clinton,Coles,Crawford,Cumberland,Douglas,Edgar,Edwards,Effingham,Fayette,Gallatin,Hamilton,Hardin,Jasper,Johnson,Lawrence,Madison,Marion,Massac,Moultrie,Pope,Richland,Saline,Shelby,Vermilion,Wabash,Washington,Wayne, andWhite counties. All or parts ofCentralia,Charleston,Danville,Edwardsville,Effingham,Glen Carbon,Mattoon, andRantoul are included.^[3] The representatives for these districts were elected in the 2012 primary and general elections, and the boundaries became effective on January 5, 2013.

• Springfield – 114,394
• Decatur – 69,097
• Quincy – 39,463
• Edwardsville – 26,808
• Alton – 25,676
• Collinsville – 24,366
• Godfrey – 17,825
• Jacksonville – 17,616
• Charleston – 17,286
• Mattoon – 16,870
• Macomb – 15,051
• Glen Carbon – 13,842
• Lincoln – 13,288
• Troy – 10,960
• Taylorville – 10,506

• Highland – 9,991
• Mahomet – 9,434
• Jerseyville – 8,337
• Paris – 8,291
• Maryville – 8,221
• Vandalia – 7,458
• Greenville – 7,083
• Clinton – 7,004
• Litchfield – 6,605
• Mount Zion – 6,019
• Beardstown – 5,951
• Monticello – 5,941
• Hillsboro – 5,902
• Pana – 5,199
• Shelbyville – 4,674
• Sherman – 4,673
• Tuscola – 4,636
• Sullivan – 4,413
• Pittsfield – 4,206
• St. Joseph – 3,810
• Aledo – 3,633
• Tolono – 3,604
• Riverton – 3,532
• South Jacksonville – 3,302
• Georgetown – 3,143
• Rushville – 3,005
• Havana – 2,963
• Arcola – 2,927
• Holiday Shores – 2,840
• Hamilton – 2,753
• Bushnell – 2,718

As of the 2020 redistricting, the district shifted from covering southeastern Illinois to encompassing the majority ofCentral Illinois. The district takes inCalhoun,Jersey,Greene,Pike,Scott,Morgan,Cass,Brown,Adams,Schuyler,Menard,Mason,Hancock,Henderson,Logan,DeWitt,Edgar,Douglas,Moultrie,Shelby,Christian,Montgomery,Fayette, andBond Counties; most ofMadison,Macon,McDonough,Champaign, andWarren Counties; half ofSangamon,Piatt, andColes Counties; and part ofVermillion County.

Madison County is split between this district and the13th district. They are partitioned on the western side by Summer St, Belleview Ave, State St, Bluff St, W 9th St, Illinois Highway 111, US Highway 67, Humbert Rd, Northwest Dr, Seminary Rd, Harris Ln, Wood Station Rd, Torch Club Rd, and Seller Rd, West Fork Wood River. They are partitioned on the eastern side by West County Line Rd, Main St, County Line Rd, Voorhees Ln, Cahokia Creek, Old Carpenter Rd, Illinois Highway 143, McCoy Dr, Alexander Dr, Dunlap Lake, Old Troy Rd, Illinois State Rte 159, Vandalia St, Union Ave, Portland St, Lebanon Rd, E Main St, and Illinois Highway 159. The 15th district takes in the communities ofHighland,Troy,Hamel,Holiday Shores,Prairietown,Williamson,Livingston,Worden,Alhambra,Marine,St. Jacob,New Douglas; most ofGodfrey; and part ofCollinsville,Alton,Maryville,Glen Carbon, andEdwardsville.

Macon County is split between this district and the13th district. They are partitioned on the northern side by Wise Rd. They are partitioned on the southern side by Sangamon River, Lincoln Memorial Parkway, Pebble Springs Rd, River Dr, W Hill Rd, S Twin Lakes Rd, US Highway 36, Illinois Highway 72, Bloomington Rd, W Mound Rd, Greenridge Dr, Illinois Highway 121, W Pershing Rd, Summit Ave, W Ravina Park Rd, Home Park Rd, N Westlawn Ave, W Marietta St, N Taylor Ave, N Fairview Ave, W Lincoln Park Dr, Illinois Highway 105, S Maffit St, E Riverside Ave, S Jasper St, E Lake Shore Dr, Lake Decatur, Norfolk Southern Railroad, Norfolk Ave, N 70th St, and William St Rd/Norfolk Rd. The 15th district takes in the municipalities ofMacon,Maroa,Mount Zion,Long Creek,Argenta,Boody,Blue Mound,Elwin, andMacon; part ofHarristown; and the southern and western outer portions ofDecatur.

Champaign County is split between this district, the2nd district, and the13th district. The 15th and 2nd districts are partitioned by County Road 3000 N, County Road 1200 E, County Road 2800 N, County Road 1500 E, Liberty Ave, E Chandler St, County Road 1800 E, and County Road 2800 N, and County Road 2000 E. The 15th and 13th districts are partitioned by County Road 300 E, County Road 600 N, County Road 600 E, County Road 900 N, County Road 1200 E, W Old Church Rd, Deers Rd, County Road 1800 E, Airport Rd, US Highway 45, E Olympian Rd, N Willow Rd, E Ford Harris Rd, County Road 2000 N, N Duncan Rd, W Bloomington Rd, N Staley Rd, W Cardinal Rd, and County Road 1800 N. The 15th district takes in the communities ofMahomet,St. Joseph,Tolono,Thomasboro,Homer,Lake of the Woods,Gifford,Penfield,Royal,Ogden,Philo,Sidney,Sadorus,Pesotum,Longview,Allerton (shared with Vermillion County), andBroadlands; and part ofFisher.

Warren County is split between this district and the17th district. They are partitioned by 60th St and 180th Ave. The 15th district takes in the communities ofLittle York,Kirkwood,Roseville, andCameron.

Sangamon County is split between this district and the13th district. They are partitioned by Lead Line Rd, Mansion Rd, N Main St, US Highway 72, Cockrell Ln, Hollis Dr, S Koke Mill Rd, Sangamon Valley Trail, Tozer Rd, Central Point Rd, Illinois Highway 29, North 1st St, East Sangamon Ave, US Highway I-55, South Grand Ave East, East Cook Rd, East Walnut Rd, Clear Lake Rd, Pfeiffer Rd, Barclay Rd, W Thompson Rd, and N Carpenter Rd. The 15th district takes in the communities ofNew Berlin,Sherman,Williamsville,Riverton,Loami,Berlin,Curran,Pleasant Plains,Cantrall,Sherman,Spaulding, andClear Lake; and part ofSpringfield.

Piatt County is split between this district and the13th district. They are partitioned on the northern side by E County Road 1800 N. They are partitioned on the southern side by E County Road 400 N and E County Road 600 N. The 15th district takes in the communities ofMansfield,De Land,La Place,Hammond,Atwood (shared with Douglas County),White Heath, and part ofMonticello

Fulton County is split between this district and the17th district. They are partitioned by East Oscar Linn Highway. The 15th district takes in the communities ofAstoria,Lewistown,Table Grove,Vermont,Ipava, andLiverpool.

McDonough County is split between this district and the17th district. They are partitioned by US Highway 136, US Highway 67, N 1150th Rd, Grant St, Deer Rd, N 1200th St, S Quail Walk Rd, Jamestown Rd, Arlington Rd, La Moine River, Emory Rd, N 1400th Rd, Krohe Dr, E 1200th St, N 1800th Rd, and E 1900th St, N 1700th St, E 2000th St. The 15th district takes in the communities ofColchester,Bushnell,Prairie City,Good Hope,Sciota,Blandinsville,Tennessee,Adair, andIndustry; as well as part ofMacomb.

Mercer County is split between this district and the15th district. They are partitioned by 220th St. The 15th district takes in the communities ofAledo,Keithsburg,New Boston,Eliza,Millersburg,Joy,Seaton, andHamlet.

Coles County is split between this district and the12th district. They are partitioned by West St, North County Rd 1800 East, Lincoln Prairie Grass Trail, 18th St, County Rd 1600 East, County Rd 400 North, County Rd 1240 East, Illinois Route 16, Dettro Dr, 700 North Rd, Old Fellow Rd, and the Kickapoo Creek. The 15th district takes in the municipalities ofCharleston andHumboldt; and most ofMattoon

Vermillion County is split between this district and the2nd district. They are partitioned by Twin Hills Rd, 1730 East, 1295 North, 1700 East, 1200 North, 1670 Rd East, 1050 North, Highway 150, Westville Ln, 1100 North, 800 East, 1200 North, and Lincoln Trail Rd. The 15th district takes in the communities ofGeorgetown,Indianola,Ridge Farm,Fairmount,Allerton (shared with Champaign County),Sidell, andOlivet.

The district covered much of the territory previously in the19th district, and its incumbent, RepublicanJohn Shimkus, filed to run in the redrawn 15th.^[5][6] Angela Michael, a retired nurse andanti-abortion activist, ran on a single-issueanti-abortion Democratic ticket.^[7]

Shimkus faced no opposition in the general election, after facing a challenge in the Republican primary fromIllinois State Senator Kyle McCarter, who had Tea Party backing and funding from theClub for Growth.^[10]

Shimkus loomed large in the 15th, but finally faced credible (if not well-funded) Democratic opposition from a local teacher and former Obama campaign worker.^[12]

After John Shimkus announced that he would not seek reelection, Republican nomineeMary Miller and Democratic nominee Erika Weaver emerged as contenders for the open Congressional seat.^[14]

Representative	Party	Years	Cong ress	Electoral history	District location
District created March 4, 1873
John R. Eden (Sullivan)	Democratic	March 4, 1873 – March 3, 1879	43rd 44th 45th	Elected in 1872. Re-elected in 1874. Re-elected in 1876. Lost renomination.
Albert P. Forsythe (Isabel)	Greenback	March 4, 1879 – March 3, 1881	46th	Elected in 1878. Lost re-election as a Republican.
Samuel W. Moulton (Shelbyville)	Democratic	March 4, 1881 – March 3, 1883	47th	Elected in 1880. Redistricted to the17th district.
Joseph G. Cannon (Danville)	Republican	March 4, 1883 – March 3, 1891	48th 49th 50th 51st	Redistricted from the14th district andre-elected in 1882. Re-elected in 1884. Re-elected in 1886. Re-elected in 1888. Lost re-election.
Samuel T. Busey (Urbana)	Democratic	March 4, 1891 – March 3, 1893	52nd	Elected in 1890. Lost re-election.
Joseph G. Cannon (Danville)	Republican	March 4, 1893 – March 3, 1895	53rd	Elected again in 1892. Redistricted to the12th district.
Benjamin F. Marsh (Warsaw)	Republican	March 4, 1895 – March 3, 1901	54th 55th 56th	Redistricted from the11th district andre-elected in 1894. Re-elected in 1896. Re-elected in 1898. Lost re-election.
J. Ross Mickey (Macomb)	Democratic	March 4, 1901 – March 3, 1903	57th	Elected in 1900. Retired.
George W. Prince (Galesburg)	Republican	March 4, 1903 – March 3, 1913	58th 59th 60th 61st 62nd	Redistricted from the10th district andre-elected in 1902. Re-elected in 1904. Re-elected in 1906. Re-elected in 1908. Re-elected in 1910. Lost re-election.
Stephen A. Hoxworth (Rapatee)	Democratic	March 4, 1913 – March 3, 1915	63rd	Elected in 1912. Retired.
Edward John King (Galesburg)	Republican	March 4, 1915 – February 17, 1929	64th 65th 66th 67th 68th 69th 70th	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. Died.
Vacant		February 17, 1929 – November 4, 1930	70th 71st
Burnett M. Chiperfield (Canton)	Republican	November 4, 1930 – March 3, 1933	71st 72nd	Elected to finish King's term. Re-elected in 1930. Lost re-election.
J. Leroy Adair (Quincy)	Democratic	March 4, 1933 – January 3, 1937	73rd 74th	Elected in 1932. Re-elected in 1934. Retired.
Lewis L. Boyer (Quincy)	Democratic	January 3, 1937 – January 3, 1939	75th	Elected in 1936. Lost re-election.
Robert B. Chiperfield (Canton)	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 the19th district.
Noah M. Mason (Oglesby)	Republican	January 3, 1949 – January 3, 1963	81st 82nd 83rd 84th 85th 86th 87th	Redistricted from the12th district andre-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. Retired.
Charlotte T. Reid (Aurora)	Republican	January 3, 1963 – October 7, 1971	88th 89th 90th 91st 92nd	Elected in 1962. Re-elected in 1964. Re-elected in 1966. Re-elected in 1968. Re-elected in 1970. Resigned to become member of theFederal Communications Commission.
Vacant		October 7, 1971 – April 4, 1972	92nd
Cliffard D. Carlson (Geneva)	Republican	April 4, 1972 – January 3, 1973	92nd	Elected to finish Reid's term. Retired.
Leslie C. Arends (Melvin)	Republican	January 3, 1973 – December 31, 1974	93rd	Redistricted from the17th district andre-elected in 1972. Resigned.
Tim Lee Hall (Dwight)	Democratic	January 3, 1975 – January 3, 1977	94th	Elected in 1974. Lost re-election.
Tom Corcoran (Ottawa)	Republican	January 3, 1977 – January 3, 1983	95th 96th 97th	Elected in 1976. Re-elected in 1978. Re-elected in 1980. Redistricted to the14th district.
Edward R. Madigan (Lincoln)	Republican	January 3, 1983 – March 8, 1991	98th 99th 100th 101st 102nd	Redistricted from the21st district andre-elected in 1982. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Re-elected in 1990. Resigned to becomeU.S. Secretary of Agriculture.
Vacant		March 8, 1991 – July 2, 1991	102nd
Thomas W. Ewing (Pontiac)	Republican	July 2, 1991 – January 3, 2001	102nd 103rd 104th 105th 106th	Elected to finish Madigan's term. Re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Retired.
Timothy V. Johnson (Urbana)	Republican	January 3, 2001 – January 3, 2013	107th 108th 109th 110th 111th 112th	Elected in 2000. Re-elected in 2002. Re-elected in 2004. Re-elected in 2006. Re-elected in 2008. Re-elected in 2010. Retired.
					2003–2013 Included the cities ofCharleston,Urbana,Danville, andChampaign, and all or parts ofLivingston,Iroquois,Ford,McLean,DeWitt,Champaign,Vermillion,Macon,Piatt,Douglas,Edgar,Moultrie,Coles,Cumberland,Clark,Crawford,Lawrence,Wabash,Edwards,White,Saline, andGallatin counties.
John Shimkus (Collinsville)	Republican	January 3, 2013 – January 3, 2021	113th 114th 115th 116th	Redistricted from the19th district. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Re-elected in 2018. Retired.	2013–2023
Mary Miller (Oakland)	Republican	January 3, 2021 – present	117th 118th 119th	Elected in 2020. Re-elected in 2022. Re-elected in 2024.
					2023–present

• 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

• 2002 Census of Agriculture - 15th Congressional District Profile
• Congressional district profiles
• Washington Post page on the 15th District of Illinois
• U.S. Census Bureau - 15th District Fact SheetArchived July 17, 2011, at theWayback Machine

38°54′19″N88°26′32″W / 38.90528°N 88.44222°W /38.90528; -88.44222

• Congressional districts of Illinois
• Champaign County, Illinois
• Clark County, Illinois
• Coles County, Illinois
• Crawford County, Illinois
• Cumberland County, Illinois
• DeWitt County, Illinois
• Douglas County, Illinois
• Edgar County, Illinois
• Edwards County, Illinois
• Ford County, Illinois
• Gallatin County, Illinois
• Iroquois County, Illinois
• Lawrence County, Illinois
• Livingston County, Illinois
• Macon County, Illinois
• McLean County, Illinois
• Moultrie County, Illinois
• Piatt County, Illinois
• Pike County, Illinois
• Saline County, Illinois
• Vermilion County, Illinois
• Wabash County, Illinois
• White County, Illinois
• Constituencies established in 1873
• 1873 establishments in Illinois
• Joseph Gurney Cannon

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