About Rock County

County Seat Janesville
Established 1836
Named After the Rock River
Population 163,944 residents
Area 726 square miles

Rock County is located in south-central Wisconsin, bordered by Illinois to the south, and includes approximately 724 square miles of diverse scene characterized by rolling farmland, glacial drumlins, and the Rock River flowing through its center. Rock County seat is Janesville, a historic manufacturing city located at 51 South Main Street, which also is the largest municipality in Rock County. Rock County was established in 1836 and named after the Rock River. Rock County population is approximately 163,000 residents according to recent census estimates, making it one of Wisconsin's more populous counties. Major cities include Janesville, known historically as the former home of a General Motors assembly plant, and Beloit, a river city with industrial heritage along the Illinois border. Rock County is home to several significant landmarks including the historic Lincoln-Tallman House in Janesville, where Abraham Lincoln stayed in 1859, and the Angel Museum. Rock County's government operates from the County Courthouse at 51 South Main Street in Janesville. Rock County Clerk's office manages elections, vital records, and county board proceedings, while the Register of Deeds office maintains land records and property documents. Rock County Assessor's office, part of the Land Information Office, provides property assessment and tax information. Rock County features a mix of urban centers, small towns like Edgerton (known for tobacco heritage) and Evansville, and extensive agricultural areas producing corn, soybeans, and dairy products. What makes Rock County unique is its blend of industrial history, agricultural productivity, and its strategic location along the I-90 corridor connecting Madison and Chicago.

  • Rock County Clerk's office manages elections, vital records, and county board proceedings, while the Register of Deeds office maintains land records and property documents.
  • Rock Municipal Assessor's office, part of the Land Information Office, provides property assessment and tax information.

Court Records & Case Information

The Access to public records in Rock County is streamlined through the Rock County Courthouse serves this area and is located at 51 South Main Street. The court handles civil, criminal, family, and probate cases for this area. Court records and case filings can be requested in person or through the Wisconsin online court portal.

Rock County Wisconsin court jurisdiction is located at 51 South Main Street, Janesville, WI 53545. It is a circuit court with jurisdiction over civil and criminal cases. It also has jurisdiction over family law, juvenile law, probate, and mental health cases.

Sheriff, Police & Law Enforcement

Law Enforcement & Arrests

  • To request arrest records, citizens may submit written requests to the specific law enforcement agency that made the arrest, either the Sheriff's Office or the appropriate municipal police department.
  • Booking photos and mugshots from Rock County Jail are generally available through the jail's inmate roster system, though older records may require a formal public records request.
  • Wisconsin's public records law requires agencies to respond to requests as soon as practicable and permits them to charge fees for copying and staff time.

Criminal, Arrest & Jail Records

Criminal Records

  • The sex offender registry is publicly accessible, providing information on registered offenders residing in Rock County.

Courts & Case Records

  • For certified copies of court documents or to access physical files, requesters must contact Rock County Clerk of Circuit Court office in person or by mail.
  • Fees for certified copies are established by Wisconsin statute at approximately $5.00 for the first page and $1.00 for each additional page, plus applicable search fees.

Property & Public Records

  • The office provides public access to land records through their online Land Records Search system, accessible through Rock County website at www.co.rock.wi.us/departments/register-of-deeds.
  • The online system allows free searching and viewing of recorded documents, though there may be fees for printing or obtaining certified copies.
  • Certified copies of recorded documents cost approximately $2.00 for the first page and $1.00 for each additional page as set by Wisconsin statute.
  • This GIS system is free to use and provides extensive property information without charge.
  • To request certified copies of any land records, requesters may visit the Register of Deeds office in person, submit requests by mail, or use the online ordering system if available for specific document types.
51 South Main Street, Janesville, WI 53545 • Phone: 608-743-2250

Vital Records

Vital records for this county include birth, death, marriage, and divorce certificates issued under state vital statistics law.

  • Death certificates also cost $20.00 for the first copy and can be requested by family members, legal representatives, or anyone demonstrating a direct and tangible interest.
  • Processing time is typically 2-4 weeks for mail requests, though expedited service is available for additional fees.
  • Divorce records (final divorce decrees) are maintained by Rock County Clerk of Circuit Court at the courthouse, as divorces are processed through the court system.
  • Wisconsin offers online ordering of some vital records through VitalChek at www.vitalchek.com, which provides expedited processing for additional fees.
  • Wisconsin vital records law is codified in Wisconsin Statutes Chapter 69, which establishes access requirements, fees, and confidentiality protections.
51 South Main Street, Janesville, WI 53545 • Phone: 608-757-5660
1 West Wilson Street, Madison, WI 53703

Business & Licensing

Business records, licenses, and permits for this county are processed by the County Clerk and local government offices.

  • This database provides information on entity name, registration date, registered agent, business address, status (active, dissolved, etc.), and annual report filing history.
51 South Main Street, Janesville, WI 53545 • Phone: 608-757-5660

Frequently Asked Questions

How can I search for someone recently arrested in Rock County, Wisconsin?
To search for someone recently arrested in Rock County, Wisconsin, you can use the Rock County Jail's inmate lookup tool. The Rock Jail is located at 200 East US Highway 14, Janesville, WI 53545. You can access the inmate search online through the county Sheriff's Office website, which provides up-to-date information on current inmates, including booking details and charges.
Mugshots or booking photos in Rock County, Wisconsin, can be obtained from the Rock County Sheriff's Office. They maintain an online portal where recent booking photos are available for public viewing. For further inquiries, you can visit their office at 200 East US Highway 14, Janesville, WI 53545, or check their official website for more details.
To obtain a criminal background check in Rock County, Wisconsin, you should contact the Wisconsin Department of Justice Crime Information Bureau. Locally, you can also request assistance from the Rock County Sheriff's Office. The process typically involves submitting a request form and paying a fee, and you can find more information on the Wisconsin DOJ's website.
You can look up sex offenders in Rock County, Wisconsin, by using the Wisconsin Sex Offender Registry. This registry is managed by the Wisconsin Department of Corrections and provides a searchable online database. You can access it to find information about registered sex offenders in Rock County, including their locations and offenses.
You can register to vote in Rock County through the online MyVote Wisconsin system at myvote.wi.gov, in person at the Rock County Clerk's office at 51 South Main Street in Janesville, by mail, or at your polling place on Election Day. The registration deadline for advance registration is 20 days before any election, but Wisconsin permits same-day registration at the polls with proper proof of residence such as a Wisconsin driver's license, utility bill, or bank statement showing your current Rock address. Once registered, you can request absentee ballots and check your registration status through the MyVote Wisconsin website.
Property records in Rock County can be searched through the Rock County Register of Deeds online land records system and the Rock GIS Land Information System, both accessible via www.co.rock.wi.us. The GIS system at gis.co.rock.wi.us provides free searches of parcel information, ownership, assessed values, property tax amounts, and aerial imagery. For recorded documents such as deeds, mortgages, and liens, use the Register of Deeds online database or contact the office at 51 South Main Street, Janesville, at (608) 743-2250 for certified copies.
Birth and death certificates for events that occurred in Rock County can be requested through the Wisconsin Department of State Vital Records Office or the Rock County Clerk's office at 51 South Main Street, Janesville, (608) 757-5660. The cost is $20.00 for the first certified copy, and applicants must provide valid photo identification and proof of eligibility (being named on the certificate, immediate family, or legal representative). Processing time is typically 2-4 weeks for mail requests, or you can order online through VitalChek at www.vitalchek.com for expedited service with additional fees.
To find business entity registrations, use the free Wisconsin Department of Financial Institutions Corporate Search at www.wdfi.org/apps/CorpSearch, which includes all registered corporations and LLCs operating in Rock County. For local business licenses and fictitious name (DBA) filings, contact the Rock County Clerk's office at (608) 757-5660 or the clerk's office in the specific municipality where the business operates. Professional licenses are maintained by the Wisconsin Department of Safety and Professional Services at https://dsps.wi.gov, and building permits are available through the Rock County Planning and Development Department or municipal building inspection offices.

Nearby Counties

Dane County WI Winnebago County IL Walworth County WI Jefferson County WI Boone County IL Green County WI