The congressional district covers parts of Bond, Champaign, Ford and Madison counties, and all of Clark, 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, and White counties.
All or parts of Centralia, Charleston, Danville, Edwardsville, Effingham, Glen Carbon, Mattoon, and Rantoul are included.
The 15th district takes in the communities of Highland, Troy, Hamel, Holiday Shores, Prairietown, Williamson, Livingston, Worden, Alhambra, Marine, St. Jacob, New Douglas; most of Godfrey; and part of Collinsville, Alton, Maryville, Glen Carbon, and Edwardsville.
The 15th district takes in the communities of Astoria, Lewistown, Table Grove, Vermont, Ipava, and Liverpool.
The 15th district takes in the communities of Colchester, Bushnell, Prairie City, Good Hope, Sciota, Blandinsville, Tennessee, Adair, and Industry; as well as part of Macomb.
The 15th district takes in the communities of Aledo, Keithsburg, New Boston, Eliza, Millersburg, Joy, Seaton, and Hamlet.
The 15th district takes in the communities of Georgetown, Indianola, Ridge Farm, Fairmount, Allerton (shared with Champaign County), Sidell, and Olivet.
[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.
[14] John R. Eden(Sullivan) Samuel W. Moulton(Shelbyville) Joseph G. Cannon(Danville) Samuel T. Busey(Urbana) Joseph G. Cannon(Danville) Benjamin F. Marsh(Warsaw) J. Ross Mickey(Macomb) George W. Prince(Galesburg) Stephen A. Hoxworth(Rapatee) Edward John King(Galesburg) Burnett M. Chiperfield(Canton) J. Leroy Adair(Quincy) Lewis L. Boyer(Quincy) Robert B. Chiperfield(Canton) Noah M. Mason(Oglesby) Charlotte T. Reid(Aurora) Leslie C. Arends(Melvin) Tim Lee Hall(Dwight) Tom Corcoran(Ottawa) Edward R. Madigan(Lincoln) Thomas W. Ewing(Pontiac) Timothy V. Johnson(Urbana) John Shimkus(Collinsville) Mary Miller(Oakland)