Reviewed and updated October 7, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. Every office link was opened and checked against the office's own site between September 23, 2026 and September 25, 2026.
Chicago, Illinois, in Cook County, has about 2.7 million residents (2024 Census Bureau estimate). Its court cases are filed in the Circuit Court of Cook County, and the file of each case, kept by the Circuit Clerk, is the public record of it. This guide says which court hears what, where to look a case up and who keeps the files.
This guide covers the courts, the records page, criminal cases, kinds of files and common questions.
Related guides: Chicago public records, Cook County public records, Chicago warrants, Chicago inmate search, Chicago criminal records, Chicago police reports, Illinois arrest records and Illinois inmate search.
The Courts That Hear Cases from Chicago
Court cases from Chicago are filed in the Circuit Court of Cook County, which hears every civil, criminal, family, probate, traffic and juvenile case.
Divorces go to the Circuit Court's domestic relations division, and the file stays with the Circuit Clerk.
The Circuit Clerk keeps the files, and a copy of anything in a file comes from that office, under the court's own rules rather than the Illinois Freedom of Information Act.
Looking Up a Case from Chicago
For Cook County, SearchSystems opened and checked the court records page for the county at cookcountyil.gov/service/court-records-and-archives (page title: Court Records and Archives), which answered when SearchSystems opened it on September 23, 2026.
Illinois has no single public index of every trial court case; each court's records are looked up through that court.
The Illinois court page SearchSystems verified is at illinoiscourts.gov.
What Reaches the Court from Chicago
Together, the 100 agencies in Cook County with all twelve months of 2025 on file reported 71,187 arrests to the FBI that year; the State's Attorney decides which of those arrests become cases in the Circuit Court of Cook County.
The State's Attorney's page SearchSystems verified is at cookcountyil.gov/agency/states-attorney (page title: States Attorney), phone (312) 603-1880, which answered when SearchSystems opened it on September 23, 2026.
The Kinds of Court Files
Criminal cases, divorces, traffic tickets and evictions all end up as files of these courts, and the file is what the public sees of each.
The other Chicago guides take the kinds of file one at a time: Chicago criminal records, Chicago divorce records, Chicago traffic tickets, Chicago DUI and Chicago property records.
Frequently Asked Questions
How do I look up a court case in Chicago?
The court records page SearchSystems verified for the county is at cookcountyil.gov.
Which court hears felonies in Chicago?
The Circuit Court of Cook County, which hears every civil, criminal, family, probate, traffic and juvenile case.
Who keeps the court records in Chicago?
The Circuit Clerk. Copies come from that office under the court's own rules.
Is there a statewide court case search in Illinois?
No. Each court's records are looked up through that court.
Is this the official Chicago website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.