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 24, 2026 and September 30, 2026.
Mercer County, North Dakota, has about 8,300 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Mercer County is held at the county jail, run by the Mercer 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: Mercer County public records, Mercer County arrest records, Mercer County warrants, Mercer County police reports, North Dakota arrest records and North Dakota inmate search.
Finding Someone in Custody in Mercer County
The county jail, run by the Mercer County Sheriff's Office, holds everyone kept in custody after an arrest in Mercer County, from every agency.
SearchSystems opened and checked the jail page of the Mercer County Sheriff's Office at mercercountynd.com/departments/sheriffs-office (page title: Mercer County, North Dakota | Departments), phone 701-745-3333, 410 Van Slyck Ave, PO Box 39 Stanton, ND 58571, which answered when SearchSystems opened it on September 24, 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 701-745-3333.
The Mercer County Jail by the Numbers
On an average day in 2019 the jail held about 2 people. Its rated capacity in 2019 was 6 beds, and it ran at 25 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Mercer County has about 8,300 residents (2024 Census Bureau estimate), so the jail holds about 2 people for every 10,000 residents.
Who Books People Into the Mercer County Jail
The Mercer County Sheriff's Office and the agencies that report for Beulah and Hazen make the arrests that end in a booking in Mercer County.
The largest arrest counts reported to the FBI were the Mercer County Sheriff's Office's 87 for 2025, Beulah's 53 for 2025 and Hazen's 17 for 2025.
Together, the three agencies in Mercer County with all twelve months of 2025 on file reported 157 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 Mercer 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 Mercer County serves the sentence in a facility of the North Dakota Department of Corrections and Rehabilitation, whose inmate locator is at docr.nd.gov/resident-lookup.
Frequently Asked Questions
How do I find an inmate in Mercer County?
Ask the Mercer County Sheriff's Office at 701-745-3333; its jail page SearchSystems verified is at mercercountynd.com.
How many people are in the Mercer County jail?
About 2 on an average day in 2019, the latest year in the Vera Institute's jail data, against a rated capacity of 6 beds.
What is the phone number for the Mercer County jail?
701-745-3333, the number on the page of the Mercer County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Mercer County go?
To a facility of the North Dakota Department of Corrections and Rehabilitation; its inmate locator is at docr.nd.gov/resident-lookup.
Is this the official Mercer 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.