About Rock County
Rock County is located in south-central Wisconsin, bordered by Illinois to the south, and encompasses approximately 724 square miles of diverse landscape characterized by rolling farmland, glacial drumlins, and the Rock River flowing through its center. The county seat is Janesville, a historic manufacturing city located at 51 South Main Street, which also serves as the largest county in the county. Rock County was established in 1836 and named after the Rock River.
- The 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.
- The Rock County Assessor's office, part of the Land Information Office, provides property assessment and tax information.
The 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. The 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. The 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.
Sheriff, Police & Law Enforcement
Sheriff & Law Enforcement
The Rock County Sheriff's Office is responsible for maintaining law and order in the unincorporated areas of the county. It operates the Rock County Jail, processes arrests, and maintains criminal records. The office is also involved in various community programs aimed at crime prevention and public safety. Notable divisions within the sheriff's office include the patrol division, detective bureau, and a specialized drug enforcement unit that addresses substance abuse issues in the county.
Police Departments
Rock County is served by several law enforcement agencies, including the Rock County Sheriff's Office and municipal police departments such as the Janesville Police Department, Beloit Police Department, and Milton Police Department. Each agency has jurisdiction over its respective city or town, while the sheriff's office covers unincorporated areas. These agencies collaborate on major crimes and public safety initiatives, ensuring comprehensive law enforcement coverage throughout the county.
Law Enforcement & Arrests
The Rock County Sheriff's Office, headquartered at 200 East US Highway 14 in Janesville, Wisconsin 53545, serves as the primary law enforcement agency for unincorporated areas of the county and provides jail operations, court security, and countywide patrol services. The Sheriff's Office can be reached at (608) 757-7911, and their website at www.co.rock.wi.us/departments/sheriff provides information on services, community programs, and public safety alerts.
- 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 the 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.
The Rock County Jail, located at the same address as the Sheriff's Office, houses inmates awaiting trial and those serving sentences of one year or less. Inmate lookup services are available through the Rock County Sheriff's website under the Jail Information or Inmate Roster section, where the public can search current inmates by name and view booking dates, charges, and bond information. Municipal law enforcement agencies within Rock County include the Janesville Police Department (serving the county's largest city), Beloit Police Department, Edgerton Police Department, Evansville Police Department, Orfordville Police Department, Footville Police Department, and Milton Police Department, each with jurisdiction within their respective city limits.
Arrest records and incident reports in Rock County are considered public records under Wisconsin Statutes §19.31-19.39, Wisconsin's Open Records Law. There are no tribal law enforcement agencies operating within Rock County, as there are no federally recognized tribal lands in the county.
Criminal, Arrest & Jail Records
Criminal Records
The criminal records ecosystem in Rock County includes records of felonies, misdemeanors, traffic violations, and the sex offender registry. The Rock County Sheriff's Office and local police departments maintain these records, while the Wisconsin Department of Justice provides statewide background checks through the Wisconsin Bureau of Investigation. Residents can request background checks for employment or personal reasons, with the process involving submission of personal information and payment of a fee.
- The sex offender registry is publicly accessible, providing information on registered offenders residing in Rock County.
Arrest Records
Arrest records in Rock County are maintained by the Rock County Sheriff's Office and the various municipal police departments within the county. Residents and attorneys can request arrest records by contacting the specific law enforcement agency involved in the arrest. These records typically include the individual's personal information, charges, and arrest details. Wisconsin's public records law, known as the Wisconsin Open Records Law, governs the accessibility of these records, ensuring transparency and public access to governmental documents.
Jail & Inmate Records
The Rock County Jail, located in Janesville, is the primary detention facility for individuals arrested within the county. The booking process involves fingerprinting, photographing, and recording personal information. Inmate lookup is available online through the Rock County Sheriff's Office website, allowing the public to find information about current detainees. Visitation rules require scheduling in advance, and visitors must adhere to strict guidelines.
- The bond and bail process in Wisconsin allows for cash bonds or surety bonds, with details available through the jail's administrative office.
Mugshots & Booking Photos
Mugshots in Rock County are taken and retained by the Rock County Sheriff's Office during the booking process. These booking photos can be accessed through the sheriff's office website or by submitting a formal request to the office. While Wisconsin does not have specific mugshot removal laws, individuals seeking removal from online databases may need to contact the hosting website directly. The sheriff's office provides guidelines on how to access these images for legal and informational purposes.
Courts & Case Records
Rock County's court system operates under the Wisconsin Circuit Court system, with the Rock County Circuit Court located at the Rock County Courthouse, 51 South Main Street, Janesville, WI 53545. The main court phone number is (608) 743-2200. Rock County has eight circuit court branches (Branches 1-8) presided over by elected judges who handle criminal, civil, family, probate, juvenile, small claims, and traffic matters. The Rock County Clerk of Circuit Court maintains all court records and can be reached at the courthouse address or through their website accessible via www.co.rock.wi.us.
- For certified copies of court documents or to access physical files, requesters must contact the 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.
Wisconsin Circuit Courts are courts of general jurisdiction with authority over virtually all case types. Municipal courts operate in several Rock County cities including Janesville, Beloit, Edgerton, and Evansville, handling ordinance violations, traffic citations, and other local matters. To search court records in Rock County, the public may use the Wisconsin Circuit Court Access (WCCA) system at wcca.wicourts.gov, a free online database providing case information for circuit court cases statewide including Rock County.
The WCCA system allows searches by name, case number, or attorney, though certain sensitive cases (juvenile, mental health, some family matters) are restricted from public view. Access to Wisconsin court records is governed by Wisconsin Statutes §§19.31-19.39 (Open Records Law) and Supreme Court Rules Chapter 70, which balance public access with privacy protections for certain case types and information.
Property & Public Records
The Rock County Register of Deeds office, located at 51 South Main Street, Janesville, WI 53545 (phone: 608-743-2250), is responsible for recording and maintaining land records and property documents for all of Rock County. The Register of Deeds records various documents including warranty deeds, quit claim deeds, mortgages and satisfactions, liens (tax liens, mechanic's liens, judgment liens), easements, declarations, plat maps, subdivision plats, and condominium declarations.
- The office provides public access to land records through their online Land Records Search system, accessible through the 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.
These records date back to the county's founding in 1836 and constitute the official chain of title for all real property in Rock County. Property tax records in Rock County are maintained by the Rock County Treasurer's office (for tax collection and payment information) and the Rock County Land Information Office, which includes assessment functions. Property tax information, assessment values, and parcel data can be searched online through the Rock County GIS Land Information System at gis.co.rock.wi.us, which provides an interactive parcel viewer showing ownership, assessed values, tax amounts, property characteristics, and aerial imagery.
Vital Records
Vital records in Rock County, Wisconsin, including birth certificates, death certificates, marriage licenses, and divorce records, are maintained by multiple agencies depending on the record type and date. Birth and death certificates that occurred in Rock County are available through the Rock County Clerk's office at 51 South Main Street, Janesville, WI 53545 (phone: 608-757-5660).
- 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 the 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.
However, Wisconsin law centralizes most vital records requests through the Wisconsin Department of Health Services, Vital Records Office, located at 1 West Wilson Street, Madison, WI 53703, which maintains statewide records. Birth certificates in Wisconsin cost $20.00 for the first copy and can be requested by eligible applicants (the person named on the certificate, parents, legal guardians, or legal representatives) with proper identification. Marriage licenses must be obtained from the Rock County Clerk's office prior to marriage, with both parties appearing in person with valid photo identification and Social Security numbers; the cost is approximately $110.00 and there is a six-day waiting period after issuance.
Marriage certificates documenting completed marriages are also available from the County Clerk. Birth records are restricted for 100 years and death records for 50 years, with access limited to authorized individuals during those periods.
Business & Licensing
Business and licensing records in Rock County are maintained by various agencies depending on the type of business activity and licensing requirement. The Rock County Clerk's office at 51 South Main Street, Janesville, WI 53545 (phone: 608-757-5660) handles certain local business filings including fictitious name registrations (doing business as or DBA filings) and some local licenses. However, most formal business entity formation and registration in Wisconsin occurs through the Wisconsin Department of Financial Institutions, which maintains the statewide business entity database.
- This database provides information on entity name, registration date, registered agent, business address, status (active, dissolved, etc.), and annual report filing history.
The Wisconsin Business Entity Search is available free online at www.wdfi.org/apps/CorpSearch, where users can search for corporations, limited liability companies (LLCs), limited partnerships, and other registered business entities operating in Wisconsin, including those based in Rock County. Professional licenses in Wisconsin (attorneys, doctors, nurses, accountants, real estate agents, contractors, etc.) are issued by state-level agencies and boards, not at the county level, and can be searched through the Wisconsin Department of Safety and Professional Services at https://dsps.wi.gov. Sales tax permits are issued by the Wisconsin Department of Revenue.
Building permits, zoning approvals, and land use permits in Rock County are handled by the Rock County Planning and Development Department (for unincorporated areas) at 51 South Main Street, Janesville, WI 53545, or by individual municipal building inspection departments within incorporated cities and villages. These records include building permits, occupancy permits, zoning variances, and conditional use permits, which are public records accessible through the appropriate county. The Rock County Economic Development Alliance and local chambers of commerce including the Janesville Area Chamber of Commerce (www.janesvillechamber.com) and the Greater Beloit Chamber of Commerce (www.greaterbeloitchamber.org) provide business support services and networking.
Elections & Voter Records
Elections in Rock County, Wisconsin, are administered by the Rock County Clerk's office, which serves as the county's chief election authority under Wisconsin election law. The Rock County Clerk is located at 51 South Main Street, Janesville, WI 53545, and can be reached at (608) 757-5660. Election information is available on the county website at www.co.rock.wi.us/departments/county-clerk/elections.
- Rock County voter turnout in the November 2024 general election was approximately 74-76% of registered voters, consistent with Wisconsin's traditionally high turnout rates in presidential elections.
- Rock County voters may request absentee ballots through the MyVote Wisconsin website, by contacting their municipal clerk, or by written request to the Rock County Clerk.
- Absentee ballot requests must be received by the Thursday before the election for mail ballots, though in-person absentee voting is available up to the Sunday before Election Day.
- Citizens may request precinct-level results, copies of poll books, and other election administration records under Wisconsin's Open Records Law, with certain security-sensitive information protected from disclosure.
Voter registration in Rock County can be completed online through the statewide MyVote Wisconsin system at myvote.wi.gov, by mail using a voter registration form, in person at the County Clerk's office or municipal clerk offices, or at the polling place on Election Day with proof of residence. Wisconsin law requires voters to register at least 20 days before an election to be eligible to vote in that election, though same-day registration is permitted at the polls on Election Day with proper proof of residence documentation. Voters in Rock County can find their polling place, view sample ballots, check registration status, and track absentee ballots through the MyVote Wisconsin website by entering their name and date of birth.
Election records that are public in Rock County include voter registration lists (available for purchase by candidates and parties), campaign finance reports filed by candidates and committees (available through the Wisconsin Campaign Finance Information System at cfis.wi.gov and local clerk offices), candidate nomination papers and declarations of candidacy, and official election results by ward and county. The next major election is scheduled for November 3, 2026, featuring Wisconsin's gubernatorial race, U.S. Senate seat, all U.S.
House seats including Wisconsin's 1st Congressional District (which includes Rock County), state legislative seats, and county offices including sheriff, clerk, treasurer, and county board supervisors. Wisconsin's election transparency is governed by Wisconsin Statutes Chapters 5-12, which establish public access to voter lists, campaign finance data, and election results.
Economy & Demographics
Rock County's economy historically centered on heavy manufacturing, particularly automotive production, agriculture, and industrial equipment, though the county has diversified significantly in recent decades. Major employers in Rock County include Beloit Health System (hospital and healthcare), Mercyhealth Hospital and Trauma Center (Janesville), SSI Technologies (automotive sensors), Seneca Foods Corporation (vegetable canning), Kerry Ingredients (food manufacturing), Woodman's Food Market (regional grocery chain headquartered in Janesville), and numerous smaller manufacturers and service providers.
- The median household income in Rock County is approximately $62,000 according to recent census estimates, slightly below the Wisconsin state median.
The closure of the General Motors assembly plant in Janesville in 2008 was a significant economic event, but subsequent diversification efforts have brought distribution centers, advanced manufacturing, and healthcare growth. Key economic sectors include advanced manufacturing (precision machining, automation, sensors), healthcare and social assistance, agriculture (corn, soybeans, dairy farming, specialty crops), logistics and distribution (due to I-90/I-43 access), retail trade, and educational services. Agriculture remains important with Rock County ranking among Wisconsin's top counties for crop production.
The county unemployment rate typically tracks close to or slightly above state averages, with rates varying by economic conditions. Notable economic development projects include the redevelopment of the former GM plant site for mixed industrial uses, expansion of healthcare facilities, growth of the Route 26 business corridor in Janesville, and attraction of distribution centers from major retailers. The Rock County 5.0 economic development initiative focuses on attracting advanced manufacturing, supporting entrepreneurship, and workforce development.
The county benefits from proximity to Madison (40 miles northwest) and the Illinois border, providing access to labor markets and transportation networks.
Transparency Score
Court Records: ✅ Online (WCCA) | Property: ✅ Free Search (GIS/Land Records) | Arrest/Jail: ✅ Online Roster | Vital Records: ⚠️ In-Person/Mail Required | Business: ✅ Online (State Database) | Elections: ✅ Online (MyVote WI) | Overall Score: 9/10 — Rock County provides excellent digital access to most public records with robust online systems for court, property, jail, and election information.
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Cities & Towns in Rock County
Explore public records for 11 cities and communities in Rock County, Wisconsin.
Nearby Counties
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