Illinois Genealogy Resources
Names of many Illinois residents may be found in civil court records of actions such as disputes over property or settlement of estates. Criminal court records have information of people involved in confrontations, thefts, or destruction of property. These records may give a person’s age, residence, occupation, and family relationships. Friends and neighbors may have given depositions as witnesses.
Since 1818, courts in Illinois have consisted of a Supreme Court and inferior courts. Major courts that kept records of genealogical value were established as follows:
County courts were countywide courts with jurisdiction over minor civil and criminal cases and, in some counties, probate matters. Separate probate courts were established in larger counties.
Municipal (or City) courts had jurisdiction with circuit courts over civil and criminal actions.
Justices of the peace had jurisdiction over misdemeanors and minor civil cases.
County commissioners’ courts originally had countywide jurisdiction over public roads, turnpikes, canals, taxes, and licenses, but have evolved into administrative rather than judicial bodies. Circuit courts were created as early as 1819. They became the major trial courts in 1964 when all other trial courts were abolished. The circuit courts have handled civil and criminal cases, probate and estate files, and guardianship, adoption, divorce, and naturalization records. Currently, there are 21 judicial circuits and a Cook County circuit in Illinois. Most of these serve several counties, and court sessions are held in each county. The circuit clerks in each county hold the records of cases heard in their court. Many court records have been transferred to IRAD depositories by the counties.
Other court records in Illinois were created by the Illinois Supreme Court (established in 1818) and intermediate appellate and police courts. The Chicago court system has included mayoral, superior, criminal, and family courts.
Since 1964, the records of all earlier courts have been in the custody of the circuit court in each county. Jurisdiction for these courts included criminal cases, civil suits for more than $20, appeals from the justices of the peace, and some naturalizations. Additional responsibilities have been added through the years, including local, county, and state judicial elections.
Today the clerk each circuit court is responsible for a wide variety of activities, among them selection of juries, maintaining court records, recording probate actions, and filing reports. Twenty-one circuit courts presently serve the state. Records of the circuit courts remain with their respective clerks except for those that have been archived or otherwise stored.
Records of the former Cook County Superior Court and some other Chicago area courts are now with:
Circuit Court of Cook County, Archives Department
Room 1113, Richard J. Daley Center
Chicago, IL 60602
Telephone: 312- 443-5500
- Clayton, John. The Illinois Fact Book and Historical
Almanac, 1673–1968. Carbondale, Ill.: Southern Illinois
University Press, 1970.
- Crossley, Frederic Bears. Courts and Lawyers. 3 vols.
Chicago: American Historical Society, 1916. This work gives a
brief history of the court system in Illinois and biographical
sketches of those who affected the history of the courts and
those who were part of the bar about 1916.
- Fichtel, Michael. "Going to the Courthouse, Treasures Await
the Genealogist." Illinois State Genealogical Society
Quarterly, 41:3 159-161.
History of the Illinois Judicial Systems.
- Klein, Fannie J. Federal and State Court Systems: A Guide. Cambridge, Mass.: Ballinger Publishing, 1977, 103–8.