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 September 24, 2026.
Rock County, Wisconsin, has about 165,000 residents (2024 Census Bureau estimate). Its court cases are filed in the Rock County Circuit Court, and the file of each case, kept by the Clerk of Circuit Court, 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: Rock County public records, Rock County arrest records, Rock County warrants, Rock County inmate search, Rock County criminal records, Wisconsin arrest records and Wisconsin inmate search.
The Courts That Hear Cases from Rock County
In Rock County, the Rock County Circuit Court hears every civil, criminal, family, probate and juvenile case.
A city with a municipal court of its own tries the tickets written under its ordinances.
Divorces go to the Circuit Court, and the file stays with the Clerk of Circuit Court.
The Clerk of Circuit Court keeps the files, and a copy of anything in a file comes from that office, under the court's own rules rather than the Wisconsin Public Records Law.
Looking Up a Case from Rock County
The court records page SearchSystems verified for the county is at co.rock.wi.us/departments/circuit-court (page title: Circuit Court | Rock County, WI), phone 608-757-5785, 51 South Main Street Janesville, WI 53545, Monday - Friday 7:30 am - 4:30 pm, which answered when SearchSystems opened it on September 23, 2026.
Statewide, Wisconsin Circuit Court Access is the free statewide case search of every circuit court.
The Wisconsin court page SearchSystems verified is at wicourts.gov/casesearch.htm.
What Reaches the Court from Rock County
Together, the six agencies in Rock County with all twelve months of 2025 on file reported 5,739 arrests to the FBI that year; the District Attorney decides which of those arrests become cases in the Rock County Circuit Court.
The District Attorney's page SearchSystems verified is at co.rock.wi.us/departments/district-attorney (page title: District Attorney | Rock County, WI), phone (608) 757-5615, 51 South Main Street Janesville, WI 53545, Mon - Thurs: 8 am - 4:30 pm, 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 Rock County guides take the kinds of file one at a time: Rock County criminal records, Rock County divorce records, Rock County traffic tickets, Rock County DUI and Rock County property records.
Cities in Rock County
Wherever in the county a case arises, it is filed in the Rock County Circuit Court; tickets under a city's own ordinances go to its municipal court where it has one.
SearchSystems has a guide to the offices of these cities in Rock County, with the 2024 Census Bureau population; a city with its own court records guide opens there:
- Janesville (66,428)
- Beloit (36,633)
- Edgerton (6,138)
- Evansville (5,819)
- Milton (5,778)
Frequently Asked Questions
How do I look up a court case in Rock County?
The court records page SearchSystems verified for the county is at co.rock.wi.us/departments/circuit-court, phone 608-757-5785. Statewide, Wisconsin Circuit Court Access is the free statewide case search of every circuit court.
Which court hears felonies in Rock County?
The Rock County Circuit Court, which hears every civil, criminal, family, probate and juvenile case.
Who keeps the court records in Rock County?
The Clerk of Circuit Court. Copies come from that office under the court's own rules.
Is there a statewide court case search in Wisconsin?
Yes: Wisconsin Circuit Court Access, the free statewide case search of every circuit court.
Is this the official Rock 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.