Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest and crime 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.
Janesville, Wisconsin, in Rock County, has about 66,000 residents (2024 Census Bureau estimate). A police report belongs to the agency whose officer wrote it, so which office holds a report from Janesville depends on where the incident happened. This guide names each agency, where its records page is and what the Wisconsin Public Records Law requires of it.
This guide covers which agency, the city's records page, the sheriff's reports, what the law requires and common questions.
Related guides: Janesville public records, Rock County police reports, Janesville arrest records, Janesville warrants, Janesville inmate search, Janesville criminal records, Wisconsin arrest records and Wisconsin inmate search.
Which Agency Holds a Report from Janesville
A crime, incident or collision report belongs to the agency whose officer wrote it, and that agency releases it, not the court, the jail or the prosecutor.
Inside Janesville that is the agency that reports to the FBI for the city (filed by the FBI as Janesville Police Department); outside it, the Rock County Sheriff's Office.
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.
Reports from the Janesville Police
For Janesville, SearchSystems opened and checked the Janesville police department's page at janesvillewi.gov/departments-services/police (page title: Police | Janesville, WI), phone (608) 755-3100, which answered when SearchSystems opened it on September 25, 2026.
The agency that reports for Janesville had 81 violent and 1,045 property crimes reported for 2025 and reported 3,504 arrests for 2025.
Reports from the Rock County Sheriff's Office
The Rock County Sheriff's Office is the county agency; it had 43 violent and 140 property crimes reported for 2025 and reported 1,573 arrests for 2025.
Its reports come from its records unit, reached through the office at 608-757-8000. The office's page SearchSystems verified is its jail page, at co.rock.wi.us/departments/sheriff-s-office/jail (page title: Jail | Rock County, WI), phone 608-757-8000, 200 East US Highway 14 Janesville, WI 53545, Monday - Friday 7:00 am - 3:00 pm, which answered when SearchSystems opened it on September 23, 2026.
What the Wisconsin Public Records Law Requires
Under the Wisconsin Public Records Law the agency must answer a request as soon as practicable and without delay; the law sets no number of days, and it may charge the actual cost of copying and locating, with no charge for the first $50 of locating. The request goes to the agency that holds the report, in writing, and does not have to say why the report is wanted.
Any other county record goes through the county records request page SearchSystems verified, at co.rock.wi.us/departments/county-clerk/public-records-request (page title: Public Records Requests | Rock County, WI).
A defendant who has been charged gets the report through the case: the District Attorney, (608) 757-5615, handles discovery for pending cases.
Frequently Asked Questions
How do I get a police report in Janesville?
From the agency that took it. The Janesville police department's page is at janesvillewi.gov/departments-services/police, phone (608) 755-3100; the sheriff's reports come from the Rock County Sheriff's Office.
How long does an agency in Janesville have to answer?
Under the Wisconsin Public Records Law, as soon as practicable and without delay; the law sets no number of days. It may charge the actual cost of copying and locating, with no charge for the first $50 of locating.
How do I get a report from the Rock County Sheriff's Office?
From its records unit, reached through the office at 608-757-8000. Under the Wisconsin Public Records Law the answer is due as soon as practicable and without delay; the law sets no number of days.
Is this the official Janesville 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.