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. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. 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). Every warrant for Rock County comes from a judge of the Rock County Circuit Court, is served by whichever agency finds the person, and is recorded in the court file of the case it was issued in. This guide says who issues and serves warrants here, where a person arrested on one is held, how to check for one and how one is cleared.
This guide covers who issues warrants, who serves warrants, after a warrant arrest, checking for a warrant, clearing a warrant and common questions.
Related guides: Rock County public records, Rock County arrest records, Rock County inmate search, Rock County criminal records, Rock County court records, Wisconsin arrest records and Wisconsin inmate search.
Who Issues Warrants in Rock County
In Wisconsin an arrest warrant is signed by a judge. For Rock County that means the Rock County Circuit Court, which hears every civil, criminal, family, probate and juvenile case. A city with a municipal court of its own issues warrants on the tickets and ordinance cases it tries.
A bench warrant follows a missed court date in any of those courts. Whichever kind it is, the warrant is part of the file of the case it was issued in, and the Clerk of Circuit Court keeps that file.
For Rock County, SearchSystems opened and checked the court records page for the county 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.
Who Serves Warrants in Rock County
The Rock County Sheriff's Office and the agencies that report for Janesville, Beloit (town), Beloit, Edgerton, Evansville, Milton and three more cities serve warrants in Rock County.
The Brodhead Police Department is listed by the FBI across two counties including Rock County, so its arrests are not broken out for Rock County here.
The agency that serves a warrant from Rock County is whichever one finds the person; a Wisconsin warrant is valid across Wisconsin.
Together, the six agencies in Rock County with all twelve months of 2025 on file reported 5,739 arrests to the FBI that year; arrests on warrants are counted among them, not separately.
Each agency and what it reported is in Rock County arrest records.
Where a Person Arrested on a Warrant from Rock County Is Held
A person arrested on a warrant and kept in custody goes to the county jail, whichever agency made the arrest. The jail, run by the Rock County Sheriff's Office, held about 360 people on an average day in 2025 by the Vera Institute of Justice's count and has a jail page SearchSystems verified at co.rock.wi.us/departments/sheriff-s-office/jail, phone 608-757-8000. The Rock County inmate search guide covers the jail in full.
A person arrested in Rock County on a warrant from another county is held at the same jail until that county takes custody.
How to Check for a Warrant in Rock County
Whether a warrant is out from Rock County shows in three places:
- The court file of the case, through the Clerk of Circuit Court at 608-757-5785, since a warrant is recorded in the case it was issued in.
- Wisconsin Circuit Court Access, the free statewide case search of every circuit court, for a case whose register of actions shows a warrant.
- The District Attorney, phone (608) 757-5615, which can say whether charges were filed; a warrant on a complaint follows the filing.
Not one of the Rock County pages SearchSystems verified (the sheriff's, the court's, the prosecutor's and the records request page) is a list of open warrants, so a check means asking the court or the prosecutor about a case by name.
Clearing a Warrant from Rock County
A warrant is recalled by the court that issued it, so clearing one from Rock County starts with the Clerk of Circuit Court at 608-757-5785: the case goes back on the calendar and the judge recalls the warrant when the person appears.
A lawyer can often arrange the appearance in advance. The District Attorney's page SearchSystems verified is at co.rock.wi.us/departments/district-attorney, phone (608) 757-5615.
Frequently Asked Questions
Can I check for a warrant online in Rock County?
Not from the Rock County pages SearchSystems verified; none of them is a warrant list. Wisconsin Circuit Court Access is the free statewide case search of every circuit court, and a case whose register of actions shows a warrant is the record of it. The court file is the record of a warrant: ask the Clerk of Circuit Court at 608-757-5785.
Who serves warrants in Rock County?
The Rock County Sheriff's Office, and the agency that reports for the city where the person is found; a Wisconsin warrant is valid anywhere in the state.
Where is a person arrested on a warrant in Rock County held?
At the county jail, run by the Rock County Sheriff's Office, if kept in custody.
How is a warrant from Rock County cleared?
By appearing before the court that issued it; the judge recalls the warrant in court. The case is put back on the calendar through the Clerk of Circuit Court at 608-757-5785.
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.