How to Find Someone in Custody in Montana

Finding someone in custody in Montana means knowing which system holds them: the Montana Department of Corrections for state sentences, the county jail for pretrial and short stays, or the federal Bureau of Prisons. All three have free official lookups — this page collects them.

  • State custody: start with the Montana Department of Corrections locator (cor.mt.gov) — name or ID number searches, current facility, and in most cases projected release dates.
  • County jails: 18 Montana counties post their own jail rosters, linked below — that's where you'll find anyone arrested recently or serving under a year.
  • Federal custody: the Bureau of Prisons locator (bop.gov) covers federal defendants and anyone sentenced in US District Court — a separate population people forget to check.
  • Stay notified: VINELink sends automatic alerts when someone's custody status changes — transfer, release, or escape — in nearly every state.

Montana's Correctional Offender Network shows placement — prison, prerelease, or community supervision — not just walls-and-bars custody. Content reviewed July 29, 2026 by the SearchSystems editorial team.

Official Montana Custody Lookups

Montana Department of Corrections — Inmate Locator
Official Free
The official Montana state-custody search. Current facility, custody status, and release information for people serving state sentences.
🌐 cor.mt.gov
VINELink — Montana Custody Alerts
Official Free
Search custody status and register for automatic notification when someone is moved or released. Free, run for victims but open to anyone.
🌐 vinelink.com
Federal Bureau of Prisons — Inmate Locator
Official Free
Everyone in federal custody since 1982, searchable by name or register number. Covers federal sentences, which no state system lists.
🌐 bop.gov

Montana Counties With Online Jail Rosters

These counties publish their own booking or in-custody lists — click through for each county records page.

Beaverhead Blaine Fallon Fergus Flathead Gallatin Glacier Jefferson Madison Missoula Petroleum Phillips Roosevelt Sanders Treasure Valley Wheatland Yellowstone

Frequently Asked Questions

Is the Montana inmate locator free?
Yes. Every official source on this page is free to search. Sites that charge for 'inmate reports' are reselling public data.
Why can't I find someone arrested yesterday?
Fresh arrests appear in the county jail's booking system first, sometimes hours later. State locators only list people after sentencing and transfer to state custody.
Does a locator listing mean the person was convicted?
No. Jail rosters include people awaiting trial who are presumed innocent. Check the court docket for the case outcome.
How do I send money or arrange a visit?
Each facility sets its own rules — the Montana Department of Corrections site covers state facilities, and each county sheriff posts local jail policies.

Related Montana Records

Custody is one piece: the Montana criminal records page covers official background checks, wants & warrants lists who's being looked for, and Montana court records hold the cases behind every custody entry.