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). A police report belongs to the agency whose officer wrote it, so which office holds a report from Lake Mills 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: Lake Mills public records, Jefferson County police reports, Lake Mills arrest records, Lake Mills warrants, Lake Mills inmate search, Lake Mills criminal records, Wisconsin arrest records and Wisconsin inmate search.
Which Agency Holds a Report from Lake Mills
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 Lake Mills that is the agency that reports to the FBI for the city (filed by the FBI as Lake Mills Police Department); outside it, the Jefferson County Sheriff's Office.
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.
Reports from the Lake Mills Police
For Lake Mills, SearchSystems opened and checked the Lake Mills police department's page at cityoflakemillswi.gov/policecontact (page title: City of Lake Mills | Contact the Police Department), phone (920) 674-7310, which answered when SearchSystems opened it on September 26, 2026.
The agency that reports for Lake Mills had 8 violent and 29 property crimes reported for 2025 and reported 168 arrests for 2025.
Reports from the Jefferson County Sheriff's Office
The Jefferson County Sheriff's Office is the county agency; it had 11 violent and 85 property crimes reported for 2025 and reported 552 arrests for 2025.
Its reports come from its records unit, reached through the office at 920-674-7310. The office's page SearchSystems verified is its jail page, at jeffersoncountywi.gov/sheriff_br_law_enforcement___public_safety/ja... (page title: Jefferson County Jail Division), phone 920-674-7310, 411 S. Center Avenue Jefferson WI 53549, which answered when SearchSystems opened it on October 9, 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 jeffersoncountywi.gov/sheriff_br_law_enforcement___public_safety/op... (page title: Jefferson County Open Records).
A defendant who has been charged gets the report through the case: the District Attorney, 920-674-7220, handles discovery for pending cases.
Frequently Asked Questions
How do I get a police report in Lake Mills?
From the agency that took it. The Lake Mills police department's page is at cityoflakemillswi.gov/policecontact, phone (920) 674-7310; the sheriff's reports come from the Jefferson County Sheriff's Office.
How long does an agency in Lake Mills 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 Jefferson County Sheriff's Office?
From its records unit, reached through the office at 920-674-7310. 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 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.