Category
page 1County seats in Illinois
Chicago
Chicago is the most populous city in the U.S. state of Illinois and in the Midwestern United States. Located on the western shore of Lake Michigan, it is the third-most populous city in the United States, with a population of 2.74 million at the 2020 census. The Chicago metropolitan area has 9.41 million residents and is the third-largest metropolitan area in the country. Chicago is the seat of Cook County, the second-most populous county in the U.S.
Springfield
capital city of Illinois and county seat of Sangamon County
Rockford
county seat of Winnebago County, Illinois, United States
Peoria
county seat of Peoria County, Illinois, United States
Joliet
city in Illinois, United States
Urbana
town in and county seat of Champaign County, Illinois, United States
Waukegan
county seat of Lake County, Illinois, United States
Bloomington
city and the county seat of McLean County, Illinois, United States
Decatur
city in Macon County, Illinois, United States
Galesburg
county seat of Knox County, Illinois, United States
Kankakee
city in Kankakee County, Illinois, United States
Belleville
city in and seat of St. Clair County, Illinois, United States
Quincy
county seat of Adams County, Illinois, United States
Rock Island
city in and the county seat of Rock Island County, Illinois, United States
Dixon
city and county seat of Lee County, Illinois, United States
Cairo
city in Illinois, United States
Charleston
city in and the county seat of Coles County, Illinois, United States
Danville
city in and the county seat of Vermilion County, Illinois, United States
Freeport
city and county seat and largest city of Stephenson County, Illinois, United States
Ottawa
city in Illinois, United States
Jacksonville
city in Morgan County, Illinois, United States
Paris
city in Illinois
Wheaton
city and county seat of DuPage County, Illinois, United States
Edwardsville
city in Madison County, Illinois, United States
Lincoln
city in Illinois, United States
Woodstock
city in McHenry County, Illinois, United States
Salem
city in Illinois, United States
Marion
city in and the county seat of Williamson County, Illinois, United States
Galena
county seat of Jo Daviess County, Illinois
Belvidere
city in Illinois, United States
Harrisburg
county seat of Saline County, Illinois, United States
Effingham
city in Illinois, United States
Pontiac
city in Illinois, USA
Macomb
city in and the county seat of McDonough County, Illinois, United States
Geneva
city and county seat of Kane County, Illinois, United States
Carlinville
city in Illinois, United States
Carthage
city in and county seat of Hancock County, Illinois, United States
Mount Vernon
city located near the center of Jefferson County, Illinois, United States
Metropolis
city in Illinois, United States
Monticello
city in Piatt County, Illinois, United States
Murphysboro
city in Illinois, United States
Shelbyville
city in Illinois, United States
Vandalia
city in Illinois, United States
Chester
city in Illinois, United States
Greenville
city in Bond County, Illinois, United States
Albion
city in and county seat of Edwards County, Illinois, United States
Pekin
city and county seat of Tazewell County, Illinois, United States
McLeansboro
city in Illinois
Tuscola
city in Illinois, United States
Sycamore
city in Illinois, United States
Monmouth
city in Warren County, Illinois, United States
Watseka
city in and county seat of Iroquois County, Illinois, United States
Morris
city in Illinois, United States
Carlyle
city in Clinton County, Illinois, United States
Lacon
city in Marshall County, Illinois, United States
Fairfield
city in Illinois, United States
Eureka
city in Woodford County, Illinois, United States
Jerseyville
city in Jersey County, Illinois, United States
Lewistown
city in Illinois, USA
Mount Carroll
city in Carroll County, Illinois, United States