Illinois Government records cover a broad range of genealogy subject areas that can help you as part of your research, such as land ownership, courts, taxes, and naturalization’s. Given that Illinois court records cover such a wide selection of topics, they could aid you in many different ways. As an example, they could aid you in finding ancestors’ residences, identify occupations, locate financial information, determine citizenship status, or shed light on relationships between individuals. The whole thing relies upon on the type of court records that the ancestors” names show up in. For Definitions of all court terms see the Genealogy Encyclopedia.

Illinois Courthouse records change extensively from county to county in both level of quality and volume. You will find different kinds of court records that are most likely to possess information related for your genealogical research below.

Illinois Court Records

Illinois Land Records

See Also Guide to U.S. Land Records Research

Illinois Probate Records

See Also Guide to U.S. Probate Records Research

Illinois Tax Records

See Also Guide to U.S. Tax Records Research

Illinois Immigration & Naturalization Records

See Also Guide to U.S. Immigration Records Research

Illinois County & City Government Links

Illinois contains 102 counties. Each county is the local level of government within its borders. The links in the table below link to county and city government offices and is limited to government-maintained websites. If you know of a Illinois county that has an official government web site but is not linked, or if the link is in error, please contact us so we may edit our database. Illinois State Government is located in Springfield.

State of Illinois County & City Government Links


County Seat




County Seat


Adams Quincy Livingston Pontiac
Alexander Cairo Logan Lincoln
Bond Greenville La Salle Ottawa
Boone Belvidere Madison Edwardsville
Brown Mount Sterling McDonough Macomb
Bureau Princeton McHenry Woodstock
Calhoun Hardin McLean Bloomington
Carroll Mount Carroll Macon Decatur
Cass Virginia Menard Petersburg
Champaign Urbana Mercer Aledo
Christian Taylorville Morgan Jacksonville
Clinton Carlyle Moultrie Sullivan
Clark Marshall Macoupin Carlinville
Clay Louisville Marion Salem
Coles Charleston Monroe Waterloo
Cook Chicago Massac Metropolis
Crawford Robinson Marshall Lacon
Cumberland Toledo Mason Havana
De Kalb Sycamore Montgomery Hillsboro
Douglas Tuscola Ogle Oregon
DeWitt Clinton Peoria Peoria
DuPage Wheaton Perry Pinckneyville
Edgar Paris Piatt Monticello
Edwards Albion Pike Pittsfield
Effingham Effingham Pope Golconda
Fayette Vandalia Pulaski Mound City
Ford Paxton Putnam Hennepin
Franklin Benton Randolph Chester
Fulton Lewistown Richland Olney
Gallatin Shawneetown Rock Island Rock Island
Grundy Morris Saline Harrisburg
Greene Carrollton Sangamon Springfield
Hamilton McLeansboro St. Clair Belleville
Hancock Carthage Schuyler Rushville
Hardin Elizabethtown Scott Winchester
Henry Oquawka Shelby Shelbyville
Henderson Cambridge Stark Toulon
Iroquois Watseka Stephenson Freeport
Jackson Murphysboro Tazewell Pekin
Jasper Newton Union Jonesboro
Jo Daviess Galena Vermilion Danville
Jefferson Mount Vernon Wabash Mount Carmel
Jersey Jerseyville Warren Monmouth
Johnson Vienna Washington Nashville
Kane Geneva Wayne Fairfield
Kankakee Kankakee Will Joliet
Kendall Yorkville Winnebago Rockford
Knox Galesburg Woodford Eureka
Lake Waukegan Whiteside Morrison
Lawrence Lawrenceville Williamson Marion
Lee Dixon White Carmi