Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site on September 23, 2026.
Walworth County, Wisconsin, has about 106,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Walworth County is held at the county jail, run by the Walworth County Sheriff's Office, and the jail's record of each person held is a public record. This guide says where to look for someone in custody, what the jail holds and who books people into it.
This guide covers the search, the jail, who books people, state prison and common questions.
Related guides: Walworth County public records, Walworth County arrest records, Walworth County warrants, Walworth County criminal records, Walworth County court records, Wisconsin arrest records and Wisconsin inmate search.
Finding Someone in Custody in Walworth County
A person kept in custody after an arrest in Walworth County is held at the county jail, run by the Walworth County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Walworth County Sheriff's Office at co.walworth.wi.us/261/Corrections (page title: Corrections | Walworth County, WI), phone 262-741-4400, 1770 Cty Road NN Elkhorn, WI 53121, which answered when SearchSystems opened it on September 23, 2026.
That page is the office's jail information page rather than a roster, so a search for a particular person goes through the office at 262-741-4400.
The Walworth County Jail by the Numbers
On an average day in 2025 the jail held about 160 people, down from about 190 in 2019. Its rated capacity in 2025 was 512 beds, and it ran at 32 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Walworth County has about 106,000 residents (2024 Census Bureau estimate), so the jail holds about 15 people for every 10,000 residents.
Who Books People Into the Walworth County Jail
The Walworth County Sheriff's Office and the agencies that report for Whitewater, Elkhorn, Delavan (town), Delavan, Lake Geneva, East Troy and seven more cities make the arrests that end in a booking in Walworth County.
The FBI's agency list also places one more agency in Walworth County: the University of Wisconsin at Whitewater (campus police).
The Mukwonago Police Department is listed by the FBI across two counties including Walworth County, so its arrests are not broken out for Walworth County here.
The largest arrest counts reported to the FBI were the Walworth County Sheriff's Office's 1,544 for 2025, Whitewater's 961 for 2025 and Lake Geneva's 688 for 2025.
Together, the 14 agencies in Walworth County with all twelve months of 2025 on file reported 4,679 arrests to the FBI that year. Those kept in custody were booked into the county jail; a person cited and released at the scene was not.
The counts, agency by agency and year by year, are in Walworth County arrest records.
From the Jail to State Prison
The jail holds people awaiting trial and people serving short sentences. A person sentenced to prison in Walworth County serves the sentence in a facility of the Wisconsin Department of Corrections, whose inmate locator is at appsdoc.wi.gov/lop/welcome.
Frequently Asked Questions
How do I find an inmate in Walworth County?
Ask the Walworth County Sheriff's Office at 262-741-4400; its jail page SearchSystems verified is at co.walworth.wi.us/261/Corrections.
How many people are in the Walworth County jail?
About 160 on an average day in 2025, the latest year in the Vera Institute's jail data, against a rated capacity of 512 beds.
What is the phone number for the Walworth County jail?
262-741-4400, the number on the page of the Walworth County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Walworth County go?
To a facility of the Wisconsin Department of Corrections; its inmate locator is at appsdoc.wi.gov/lop/welcome.
Is this the official Walworth 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.