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 30, 2026.
Fond du Lac County, Wisconsin, has about 104,000 residents (2024 Census Bureau estimate). A police report belongs to the agency whose officer wrote it, so which office holds a report from Fond du Lac County depends on where the incident happened: the Fond du Lac County Sheriff's Office for the unincorporated county, the agency that reports for the city inside a city. 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 sheriff's reports, the cities' reports, how many reports, what the law requires and common questions.
Related guides: Fond du Lac County public records, Fond du Lac County arrest records, Fond du Lac County warrants, Fond du Lac County inmate search, Fond du Lac County criminal records, Wisconsin arrest records and Wisconsin inmate search.
Which Agency Holds a Report from Fond du Lac County
The report of an incident is released by the agency that took it; the court and the jail hold their own records of the same event, but not the report.
In Fond du Lac County that is the Fond du Lac County Sheriff's Office for the unincorporated county and for any city that contracts with it for police service, and the agency that reports for a city where the city has one of its own.
The Waupun Police Department is listed by the FBI across two counties including Fond du Lac County, so its arrests are not broken out for Fond du Lac County here.
Reports from the Fond du Lac County Sheriff's Office
The Fond du Lac County Sheriff's Office is the county agency; it had 22 violent and 53 property crimes reported for 2025 and reported 1,471 arrests for 2025.
Its reports come from its records unit, reached through the office at (920) 929-3394. The office's page SearchSystems verified is its jail page, at fdlsheriff.com/jail/jail-information (page title: Jail Information | Fond du Lac County), phone (920) 929-3394, 63 Western Avenue Fond du Lac, WI 54935, Monday through Friday 8:00 a.m. - 4:30 p.m., which answered when SearchSystems opened it on September 28, 2026.
Reports from the City Agencies in Fond du Lac County
The seven cities the FBI lists in Fond du Lac County with a reporting agency of their own:
- Fond du Lac: 179 violent and 804 property crimes reported for 2025; 3,718 arrests reported for 2025.
- Ripon: 7 violent and 37 property crimes reported for 2025; 342 arrests reported for 2025.
- North Fond du Lac: 16 violent and 22 property crimes reported for 2025; 375 arrests reported for 2025.
- Campbellsport: 9 arrests reported for 2020.
- Oakfield.
- Rosendale: 0 arrests reported for 2022.
- Brandon: 10 arrests reported for 2020.
A city on that list is reported separately whether the officers are the city's own or the sheriff's under contract; the FBI's list does not say which.
How Many Reports: Fond du Lac County in 2025
The four agencies in Fond du Lac County with all twelve months of 2025 on file reported 224 violent and 916 property crimes to the FBI that year, each one a report taken by the agency that holds it.
Together, the four agencies in Fond du Lac County with all twelve months of 2025 on file reported 5,906 arrests to the FBI that year, and each arrest is a report of its own.
What the Wisconsin Public Records Law Requires
The Wisconsin Public Records Law sets the rules: an answer as soon as practicable and without delay; the law sets no number of days, at a charge of the actual cost of copying and locating, with no charge for the first $50 of locating, from the agency that holds the report.
Any other county record goes through the county records request page SearchSystems verified, at fdlco.wi.gov/departments/departments-n-z/treasurer/obtaining-copies... (page title: Open Records Requests | Fond du Lac County).
A defendant who has been charged gets the report through the case: the District Attorney, (920) 929-3048, handles discovery for pending cases.
Frequently Asked Questions
How do I get a police report in Fond du Lac County?
From the agency whose officer took it: the Fond du Lac County Sheriff's Office for its own arrests, or the agency that reports for the city where it happened. Under the Wisconsin Public Records Law the answer is due as soon as practicable and without delay; the law sets no number of days.
How long does an agency in Fond du Lac County 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 Fond du Lac County Sheriff's Office?
From its records unit, reached through the office at (920) 929-3394. 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 Fond du Lac County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.