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 between September 23, 2026 and October 2, 2026.
Rock County, Minnesota, has about 9,500 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Rock County is held at the county jail, run by the Rock 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 and common questions.
Related guides: Rock County public records, Rock County arrest records, Rock County warrants, Rock County criminal records, Rock County court records, Minnesota arrest records and Minnesota inmate search.
Finding Someone in Custody in Rock County
The county jail, run by the Rock County Sheriff's Office, holds everyone kept in custody after an arrest in Rock County, from every agency.
SearchSystems opened and checked the jail page of the Rock County Sheriff's Office at co.rock.mn.us/department_directory/sheriff_office/index.php (page title: Rock County, Minnesota), phone 507-283-5000, 1000 N. Blue Mound Ave; Luverne, MN 56156, Monday - Friday 8:00AM - 4:30PM, 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 507-283-5000.
The Rock County Jail by the Numbers
On an average day in 2021 the jail held about 9 people, down from about 19 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 24 beds, and it ran at 80 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Rock County has about 9,500 residents (2024 Census Bureau estimate), so the jail holds about 9 people for every 10,000 residents.
Who Books People Into the Rock County Jail
The Rock County Sheriff's Office makes the arrests that end in a booking in Rock County.
The Rock County Sheriff's Office reported 55 arrests to the FBI for 2025. 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 Rock County arrest records.
Frequently Asked Questions
How do I find an inmate in Rock County?
Ask the Rock County Sheriff's Office at 507-283-5000; its jail page SearchSystems verified is at co.rock.mn.us.
How many people are in the Rock County jail?
About 9 on an average day in 2021, the latest year in the Vera Institute's jail data, against a rated capacity of 24 beds.
What is the phone number for the Rock County jail?
507-283-5000, the number on the page of the Rock County Sheriff's Office SearchSystems verified.
Is this the official Rock 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.