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 October 9, 2026.
Lake Mills, Wisconsin, in Jefferson County, has about 6,600 residents (2024 Census Bureau estimate). In Wisconsin the public criminal record is the court file, kept by the Clerk of Circuit Court; the statewide criminal history kept by the Wisconsin Department of Justice is open to anyone who asks. This guide says where each record of a criminal case from Lake Mills is kept and how it is seen.
This guide covers the court file, the statewide record, local arrest records, the crimes behind the records, the prosecutor, sex offender registry, records requests, directory links and common questions.
Related guides: Lake Mills public records, Jefferson County criminal records, Lake Mills arrest records, Lake Mills warrants, Lake Mills inmate search, Lake Mills court records, Wisconsin arrest records and Wisconsin inmate search.
Criminal Cases in the Jefferson County Circuit Court
In Wisconsin the public criminal record is the court file. Criminal cases from Lake Mills are heard by the Jefferson County Circuit Court, which hears every civil, criminal, family, probate and juvenile case, and the file of each case is kept by the Clerk of Circuit Court.
For Jefferson County, SearchSystems opened and checked the court records page for the county at jeffersoncountywi.gov/courts___legal_services/criminal_court/index.php (page title: Criminal Court), phone 920-674-7153, 311 S. Center Avenue, Rm C1080 Jefferson WI 53549, Monday-Friday 8:00 a.m. - 4:30 p.m., which answered when SearchSystems opened it on October 9, 2026.
Statewide, Wisconsin Circuit Court Access is the free statewide case search of every circuit court.
The Wisconsin Criminal History and Your Own Copy
Wisconsin is one of the states that lets anyone look up another person's statewide criminal history: the Wisconsin Online Record Check System lets anyone run a name-based check, through the Wisconsin Department of Justice. The result is the repository record, what agencies reported to the state, which is wider than one county's court index but can lag it.
Arrest Records Kept Locally in Lake Mills
The Jefferson County Sheriff's Office and the agency that reports for Lake Mills (filed by the FBI as Lake Mills Police Department) keep the arrest records in and around Lake Mills: the report and the booking record of each arrest stay with the agency that made it, separate from the court file and from the state repository.
The Whitewater Police Department and the Village of Lac La Belle Police Department are each listed by the FBI across several counties including Jefferson County, so their arrests are not broken out for Jefferson County here.
Together, the seven agencies in Jefferson County with all twelve months of 2025 on file reported 2,876 arrests to the FBI that year; how each case ended is in the court file, not in the arresting agency's.
The agencies and their counts, year by year, are in Lake Mills arrest records.
The Crimes Behind the Records: Lake Mills in 2025
The agency that reports for Lake Mills had 8 violent and 29 property crimes reported for 2025; each one is a report on file with it, and each arrest that follows is the start of a criminal record.
The District Attorney for Jefferson County
The District Attorney decides which arrests in Jefferson County become charges and files them in the Jefferson County Circuit Court; the office answers questions about pending prosecutions, and the case files themselves are court records.
The office's page SearchSystems verified is at jeffersoncountywi.gov/courts___legal_services/district_attorney/ind... (page title: District Attorney), phone 920-674-7220, 311 S. Center Avenue, C2150 Jefferson WI 53549, Monday - Friday 8:00 am - 4:30 pm, which answered when SearchSystems opened it on September 23, 2026.
The Sex Offender Registry for Lake Mills
Registered sex offenders living in Lake Mills are listed on the Wisconsin Sex Offender Registry, run by the Wisconsin Department of Corrections at wistaysafe.gov. The registry is public and can be searched online.
Registration itself is done in person with the local agency where the registrant lives: the sheriff's office, or the city police in a city with its own department.
Asking an Agency in Jefferson County for a Record
An arrest report, a booking record or a local criminal history letter comes from the agency that holds it, not from the court.
Under the Wisconsin Public Records Law a county office 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 county records request page SearchSystems verified is at jeffersoncountywi.gov/sheriff_br_law_enforcement___public_safety/op... (page title: Jefferson County Open Records).
More Official Criminal Records Pages for Jefferson County
The SearchSystems directory, online since 1997, lists the official pages for Jefferson County and Wisconsin. These criminal records pages from its Jefferson County listing were opened again on October 2, 2026 and each one still answers:
- Warrants and Wanted (jeffersoncountywi.gov)
Frequently Asked Questions
Are criminal records public in Lake Mills?
The court files of criminal cases are public, and so is the statewide criminal history kept by the Wisconsin Department of Justice: the Wisconsin Online Record Check System lets anyone run a name-based check. The arrest report itself is released by the agency that made the arrest, under the Wisconsin Public Records Law.
Can I search Lake Mills criminal cases online?
The court records page SearchSystems verified for the county is at jeffersoncountywi.gov (page title: Criminal Court). Statewide, Wisconsin Circuit Court Access is the free statewide case search of every circuit court.
How do I get my own Wisconsin criminal history?
Through the same record check, run on yourself.
Who prosecutes crimes in Lake Mills?
The District Attorney, reached at 920-674-7220, which files its cases in the Jefferson County Circuit Court.
Is this the official Lake Mills 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.