Reviewed and updated October 9, 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 October 9, 2026.
Jefferson County, Illinois, has about 36,000 residents (2024 Census Bureau estimate). Its court cases are filed in the Circuit Court of Jefferson 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, cities and common questions.
Related guides: Jefferson County public records, Jefferson County arrest records, Jefferson County warrants, Jefferson County inmate search, Jefferson County criminal records, Illinois arrest records and Illinois inmate search.
The Courts That Hear Cases from Jefferson County
In Jefferson County, the Circuit Court of Jefferson County 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 Jefferson County
The court records page SearchSystems verified for the county is at jeffcocircuitclerk.illinois.gov/yourcourtinfo (page title: Lookup Your Court Info | Jefferson County Circuit Clerk), 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 Jefferson County
Together, the three agencies in Jefferson County with all twelve months of 2025 on file reported 216 arrests to the FBI that year; the State's Attorney decides which of those arrests become cases in the Circuit Court of Jefferson County.
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 Jefferson County guides take the kinds of file one at a time: Jefferson County criminal records, Jefferson County divorce records, Jefferson County traffic tickets, Jefferson County DUI and Jefferson County property records.
Cities in Jefferson County
Wherever in the county a case arises, it is filed in the Circuit Court of Jefferson County.
The cities and towns in the county are Mount Vernon, Ina, Woodlawn, Bluford, Dix, Waltonville, Bonnie, Belle Rive and Nason.
Frequently Asked Questions
How do I look up a court case in Jefferson County?
The court records page SearchSystems verified for the county is at jeffcocircuitclerk.illinois.gov/yourcourtinfo.
Which court hears felonies in Jefferson County?
The Circuit Court of Jefferson County, which hears every civil, criminal, family, probate, traffic and juvenile case.
Who keeps the court records in Jefferson County?
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 Jefferson County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.