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.
Kalispell, Montana, in Flathead County, has about 31,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Kalispell is held at the county jail, run by the Flathead 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: Kalispell public records, Flathead County inmate search, Kalispell arrest records, Kalispell warrants, Kalispell criminal records, Kalispell court records, Montana arrest records and Montana inmate search.
Finding Someone in Custody in Kalispell
A person kept in custody after an arrest in Kalispell is held at the county jail, run by the Flathead County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the custody page of the Flathead County Sheriff's Office at apps.flathead.mt.gov/jailroster/?report=bookings&sort=bookdate&days=2 (page title: Jail Roster | Flathead County Sheriff's Office), which answered when SearchSystems opened it on September 30, 2026.
Someone booked recently shows on that page; someone cited and released at the scene, or held a few hours at a city station, does not.
The Flathead County Jail by the Numbers
On an average day in 2021 the jail held about 93 people, up from about 88 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 154 beds, and it ran at 57 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Flathead County has about 115,000 residents (2024 Census Bureau estimate), so the jail holds about 8 people for every 10,000 residents.
Who Books People Into the Flathead County Jail
The Flathead County Sheriff's Office and the agency that reports for Kalispell (filed by the FBI as Kalispell Police Department) make the arrests that end in a booking in and around Kalispell.
The largest arrest counts reported to the FBI were Kalispell's 1,002 for 2025, the Flathead County Sheriff's Office's 322 for 2025 and Columbia Falls's 284 for 2025.
Together, the four agencies in Flathead County with all twelve months of 2025 on file reported 1,787 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 Kalispell 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 Flathead 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 Kalispell?
Look on the custody page of the Flathead County Sheriff's Office at apps.flathead.mt.gov. It covers people booked into the county jail.
How many people are in the Flathead County jail?
About 93 on an average day in 2021, the latest year in the Vera Institute's jail data, against a rated capacity of 154 beds.
Where do people sentenced to prison in Flathead County go?
To a facility of the Montana Department of Corrections; its inmate locator is at offendersearch.mt.gov/conweb.
Is this the official Kalispell website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.