Condados en Illinois
- Adams
- Alexander
- Bond
- Boone
- Brown
- Bureau
- Calhoun
- Carroll
- Cass
- Champaign
- Christian
- Clark
- Clay
- Clinton
- Coles
- Cook
- Crawford
- Cumberland
- DeKalb
- DeWitt
- Douglas
- DuPage
- Edgar
- Edwards
- Effingham
- Fayette
- Ford
- Franklin
- Fulton
- Gallatin
- Greene
- Grundy
- Hamilton
- Hancock
- Hardin
- Henderson
- Henry
- Iroquois
- Jackson
- Jasper
- Jefferson
- Jersey
- Jo Daviess
- Johnson
- Kane
- Kankakee
- Kendall
- Knox
- Lake
- LaSalle
- Lawrence
- Lee
- Livingston
- Logan
- Macon
- Macoupin
- Madison
- Marion
- Marshall
- Mason
- Massac
- McDonough
- McHenry
- McLean
- Menard
- Mercer
- Monroe
- Montgomery
- Morgan
- Moultrie
- Ogle
- Peoria
- Perry
- Piatt
- Pike
- Pope
- Pulaski
- Putnam
- Randolph
- Richland
- Rock Island
- Saline
- Sangamon
- Schuyler
- Scott
- Shelby
- St. Clair
- Stark
- Stephenson
- Tazewell
- Union
- Vermilion
- Wabash
- Warren
- Washington
- Wayne
- White
- Whiteside
- Will
- Williamson
- Winnebago
- Woodford
Localidades en Illinois. Página 15 de 33
- Irving
- Irving Township Montgomery County
- Irvington
- Irwin
- Isabel Township Fulton County
- Island Grove Township Sangamon County
- Island Lake
- Itasca
- Iuka
- Ivesdale
- Jacksonville
- Jackson Township Will County
- Jacob
- Jamaica Township Vermilion County
- Janesville
- Jeffersonville
- Jefferson Township Stephenson County
- Jeisyville
- Jerome
- Jersey Township Jersey County
- Jerseyville
- Jewett
- Johnsburg
- Johnson Township Christian County
- Johnsonville
- Johnston City
- Joliet
- Joliet Township Will County
- Jonesboro
- Joppa
- Jordan Township Whiteside County
- Joshua Township Fulton County
- Joy
- Jubilee Township Peoria County
- Junction
- Junction City
- Justice
- Kampsville
- Kane
- Kaneville
- Kaneville Township
- Kangley
- Kankakee
- Kankakee Township
- Kansas
- Kansas Township Edgar County
- Kansas Township Woodford County
- Kappa
- Karbers Ridge
- Karnak
- Kasbeer
- Kaskaskia
- Keenes
- Keene Township Adams County
- Keensburg
- Keithsburg
- Keithsburg Township Mercer County
- Kell
- Kelly Township Warren County
- Kempton
- Kendall Township
- Kenilworth
- Kenney
- Kent Township Stephenson County
- Kerr Township Champaign County
- Kerton Township Fulton County
- Kewanee
- Kewanee Township Henry County
- Keyesport
- Kickapoo Township Peoria County
- Kilbourne
- Kilbourne Township Mason County
- Kildeer
- Kincaid
- Kinderhook
- Kinderhook Township Pike County
- King Township Christian County
- Kings
- Kingston
- Kingston Mines