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 2, 2026.
Grayslake, Illinois, in Lake County, has about 21,000 residents (2024 Census Bureau estimate). Its court cases are filed in the Circuit Court of Lake 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, directory links and common questions.
Related guides: Grayslake public records, Lake County court records, Grayslake arrest records, Grayslake warrants, Grayslake inmate search, Grayslake criminal records, Illinois arrest records and Illinois inmate search.
The Courts That Hear Cases from Grayslake
In Grayslake, the Circuit Court of Lake 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 Grayslake
The court records page SearchSystems verified for the county is at ilsos.gov/departments/archives/databases/lake.html (page title: Lake County Circuit Court Case Files Index (1840-1898)), phone 815-753-1807, 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 Grayslake
Together, the 31 agencies in Lake County with all twelve months of 2025 on file reported 7,816 arrests to the FBI that year; the State's Attorney decides which of those arrests become cases in the Circuit Court of Lake County.
The State's Attorney's page SearchSystems verified is at lakecountyil.gov/513/States-Attorneys-Office (page title: State's Attorney's Office | Lake County, IL), a site that blocks automated checks (HTTP 429), so open it in a browser.
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 Grayslake guides take the kinds of file one at a time: Grayslake criminal records, Grayslake divorce records, Grayslake traffic tickets, Grayslake DUI and Grayslake property records.
More Official Court Pages for Lake County
The SearchSystems directory, online since 1997, lists the official pages for Lake County and Illinois. These court pages from its Lake County listing were opened again on October 2, 2026 and each one still answers:
- Calendars, 19th Judicial Circuit Court, IL (19thcircuitcourt.state.il.us)
Frequently Asked Questions
How do I look up a court case in Grayslake?
The court records page SearchSystems verified for the county is at ilsos.gov, phone 815-753-1807.
Which court hears felonies in Grayslake?
The Circuit Court of Lake County, which hears every civil, criminal, family, probate, traffic and juvenile case.
Who keeps the court records in Grayslake?
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 Grayslake 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.