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 October 9, 2026.
Richland County, Montana, has about 11,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Richland County is held at the county jail, run by the Richland 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: Richland County public records, Richland County arrest records, Richland County warrants, Richland County criminal records, Richland County court records, Montana arrest records and Montana inmate search.
Finding Someone in Custody in Richland County
A person kept in custody after an arrest in Richland County is held at the county jail, run by the Richland County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Richland County Sheriff's Office at richland.org/sheriffs-office.html (page title: Sheriffs Office | RICHLAND COUNTY MONTANA), phone 406-433-2919, 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 406-433-2919.
The Richland County Jail by the Numbers
On an average day in 2019 the jail held about 23 people. Its rated capacity in 2019 was 39 beds, and it ran at 59 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Richland County has about 11,000 residents (2024 Census Bureau estimate), so the jail holds about 21 people for every 10,000 residents.
Who Books People Into the Richland County Jail
The Richland County Sheriff's Office and the agencies that report for Sidney and Fairview make the arrests that end in a booking in Richland County.
The largest arrest counts reported to the FBI were Sidney's 206 for 2025, Fairview's 39 for 2025 and the Richland County Sheriff's Office's 27 for 2025.
Together, the three agencies in Richland County with all twelve months of 2025 on file reported 272 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 Richland 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 Richland County serves the sentence in a facility of the Montana Department of Corrections, whose inmate locator is at offendersearch.mt.gov/conweb.
Frequently Asked Questions
How do I find an inmate in Richland County?
Ask the Richland County Sheriff's Office at 406-433-2919; its jail page SearchSystems verified is at richland.org/sheriffs-office.html.
How many people are in the Richland County jail?
About 23 on an average day in 2019, the latest year in the Vera Institute's jail data, against a rated capacity of 39 beds.
What is the phone number for the Richland County jail?
406-433-2919, the number on the page of the Richland County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Richland County go?
To a facility of the Montana Department of Corrections; its inmate locator is at offendersearch.mt.gov/conweb.
Is this the official Richland 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.