The Circuit Court of Cook County is a unified court system that provides judicial services for Cook County, Illinois, encompassing the City of Chicago and 126 surrounding suburbs. Established in 1964, the court serves a population of 5.2 million residents. Its operations are structured across ten divisions and six geographic districts.
The court processes more than one million cases annually, a volume that reflects the scale of its jurisdiction. To manage this workload, the institution employs approximately 400 judges and 2,600 non-judicial employees. This workforce supports the full range of judicial functions across the county.
As part of the judicial system and government sector, the Circuit Court of Cook County is a major public institution. Its operational structure is designed to handle the legal and administrative needs of one of the most populous counties in the United States.
