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 9, 2026.
Polk County, Minnesota, has about 30,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Polk County is held at the county jail, run by the Polk 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: Polk County public records, Polk County arrest records, Polk County warrants, Polk County criminal records, Polk County court records, Minnesota arrest records and Minnesota inmate search.
Finding Someone in Custody in Polk County
A person kept in custody after an arrest in Polk County is held at the county jail, run by the Polk County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Polk County Sheriff's Office at polkcountymn.gov/221/Sheriffs-Office (page title: Sheriff's Office | Polk County, MN), phone 218-281-0431, 600 Bruce Street Crookston, MN 56716, which answered when SearchSystems opened it on October 9, 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 218-281-0431.
The Polk County Jail by the Numbers
On an average day in 2023 the jail held about 130 people, up from about 120 in 2019. Its rated capacity in 2023 was 151 beds, and it ran at 89 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Polk County has about 30,000 residents (2024 Census Bureau estimate), so the jail holds about 44 people for every 10,000 residents.
Who Books People Into the Polk County Jail
The Polk County Sheriff's Office and the agencies that report for East Grand Forks, Crookston and Fosston make the arrests that end in a booking in Polk County.
The FBI's agency list also places one more agency in Polk County: Pine To Prairie Drug Task Force (other agency).
The largest arrest counts reported to the FBI were Crookston's 235 for 2025, East Grand Forks's 130 for 2025 and the Polk County Sheriff's Office's 116 for 2025.
Together, the four agencies in Polk County with all twelve months of 2025 on file reported 504 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 Polk County arrest records.
Frequently Asked Questions
How do I find an inmate in Polk County?
Ask the Polk County Sheriff's Office at 218-281-0431; its jail page SearchSystems verified is at polkcountymn.gov/221/Sheriffs-Office.
How many people are in the Polk County jail?
About 130 on an average day in 2023, the latest year in the Vera Institute's jail data, against a rated capacity of 151 beds.
What is the phone number for the Polk County jail?
218-281-0431, the number on the page of the Polk County Sheriff's Office SearchSystems verified.
Is this the official Polk 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.