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MT · Jefferson County

How to find someone in jail in Jefferson County, Montana

Jefferson incarcerated-person information

Use official custody resources for Jefferson County and confirm the housing location with the responsible agency. The dated facility dataset below is a reference, not confirmation that a person is held there.

County facilities listed
3
State locator
Montana Department of Corrections
Service coverage
DOC adult felony supervision
Jurisdiction
Jefferson County, MT

Which system is holding them?

There is no single search that covers everyone in Jefferson County. Match the situation to the right official locator — most families start with the first one.

If the arrest was recent

Start with the local jail

For a recent local arrest, check the arresting jurisdiction’s official jail roster or custody-notification service. Housing may be at a municipal, county, regional, or contracted facility. If no record appears, ask the arresting agency or jail how to confirm the booking; do not infer the destination from distance or a facility listing.

The current Detention Center page explicitly directs questions about people incarcerated to this number.

Jefferson incarcerated-person information

Call the published contact within its stated role and ask about custody, release or the appropriate receiving agency. A fresh police arrest may precede jail booking. The number was not called.

Published telephone assistance, not an answered-line or individual-record check. No online search is claimed by this phone route; municipal police holding and a transfer can require another contact.

Find Montana county sheriff contacts

For a recent local arrest, contact the arresting agency or responsible county sheriff. Montana DOC VINE does not establish county-jail booking coverage.

Select your county in the government-identified sheriffs association directory. Use the sheriff’s own jail/custody process; directory listings do not certify a booking hotline or current custody.

Search Montana participating-agency custody — Montana VINE covers adult felony offenders under DOC supervision, including prison, probation/parole and community DOC programs. County-jail booking coverage is not established.

Local source reviewed 2026-10-05. This is published phone assistance; the number was not called.

If nothing appears, contact the arresting agency or the responsible jail to ask how to confirm booking. A missing record does not prove release, and an agency may limit what it can disclose.

If they were sentenced to prison

Use the correctional locator

For a state-prison sentence, use the Montana correctional locator. A short jail sentence may still be served in a local or regional jail. A sentence alone does not establish the housing location; confirm with the responsible agency.

Montana DOC jurisdiction; local bookings need a separate route

Official agency instructions and assistance

Conweb returns Request Rejected in this review

Search form availability was not confirmed in this review. An access restriction, CAPTCHA, or unavailable application may require a normal browser or agency assistance; missing records do not establish release.

Reviewed 2026-10-05. Search availability is unconfirmed or this is an instructions/phone route.

If the charge is federal

Search the Federal Bureau of Prisons

A federal charge does not tell you which building holds the person. The U.S. Marshals Service is responsible for federal pretrial detention and may use local, state, private, or federal facilities. Check the Federal Bureau of Prisons locator, but a missing result does not establish that the person is not detained. For a recent federal arrest, contact the arresting agency or the relevant U.S. Marshals district office to ask about the appropriate custody-information process. USMS is a contact route, not a public person locator, and disclosure of a location is not guaranteed.

Search the Federal BOP locator U.S. Marshals district directory

Jefferson County jails & facilities 3

A listing does not establish that a person is held here. Use the responsible agency’s official locator or contact page to confirm custody.

No current facility contact has been independently verified for this guide. Start with the custody paths below or ask the arresting agency; do not travel or pay based on a historical listing.

Historical facility dataset (3 entries; current status unverified or no longer active)

These entries preserve dated source information. Addresses, phone numbers, types, and websites may be obsolete. They are not current recommendations; use official custody resources below.

County jail

JEFFERSON COUNTY CRIMINAL JUSTICE

Address
110 S WASHINGTON ST, BOULDER, MT 59632
Phone
(406) 225-4091
Rated capacity
24 beds
Source website recorded in the dataset — confirm current details

Facility info as of 2024-07-15. Historical dataset entry — current status unverified. (this listing may be out of date — it is not a confirmed current detention destination)

State correctional facility

ELKHORN TREATMENT CENTER

Address
P.O. BOX 448, BOULDER, MT 59632
Phone
(406) 447-5300
Rated capacity
50 beds

Facility info as of 2024-02-28. Historical dataset entry — current status unverified. (this listing may be out of date — it is not a confirmed current detention destination)

State correctional facility

RIVERSIDE RECOVERY & REENTRY PROGRAM

Address
2 RIVERSIDE ROAD, BOULDER, MT 59632
Phone
(406) 225-4500
Rated capacity
25 beds
Source website recorded in the dataset — confirm current details

Facility info as of 2024-02-28. Historical dataset entry — current status unverified. (this listing may be out of date — it is not a confirmed current detention destination)

Other kinds of custody

Immigration detention has a separate official ICE detainee locator. It does not search for people under 18, and a missing result does not prove release; use the official ICE field-office contacts. Search by A-number and country of birth, or the name/country/date-of-birth information requested by the service. Access and disclosure can be restricted.

Juvenile and tribal custody may have different agencies, privacy rules, and search limits. This guide does not provide a comprehensive juvenile or tribal locator. Contact the arresting agency or responsible juvenile or tribal authority to confirm the correct process.

For federal pretrial detention, use the U.S. Marshals district directory. Federal responsibility can include housing in a local jail.

Nearby counties in Montana

If the arrest happened just across a county line, these Montana counties are geographic navigation aids. Open a guide for official custody resources; these links do not establish detention or transport destinations.

If you need to bail them out in Montana

Finding the person comes first. Once you know where they are being held, this is how getting them out works in Montana.

Commercial bail available

Release depends on the court’s order. A payment is not required in every case. Ask the court which secured-bond options, if any, are permitted; a private commercial bond service has separate fees and conditions. Confirm the process before paying anyone.

The person’s rights. The person in custody has the right to talk to a lawyer about their case, and if they cannot afford one, the court can appoint a public defender.

Common questions about finding someone in Jefferson County

How do I find someone who was just arrested in Jefferson County?

For a recent local arrest, check the arresting jurisdiction’s official jail roster or custody-notification service. Housing may be at a municipal, county, regional, or contracted facility. If no record appears, ask the arresting agency or jail how to confirm the booking; do not infer the destination from distance or a facility listing.

How do I find someone in state prison from Jefferson County?

For a state-prison sentence, use the Montana correctional locator. A short jail sentence may still be served in a local or regional jail. A sentence alone does not establish the housing location; confirm with the responsible agency.

Is there a free way to check if someone is in custody in Montana?

Public custody searches are free. Montana VINE covers adult felony offenders under DOC supervision, including prison, probation/parole and community DOC programs. County-jail booking coverage is not established. Check whether the responsible local agency participates. Use its contact when the service is unavailable; a missing record does not establish release.

How does bail work for someone held in Jefferson County?

Ask the court or responsible jail for the release order and permitted options. Court deposits and private service fees are different, conditions vary, and payment does not guarantee release.

More of Montana

This is one of Montana’s counties. The state guide has the complete rundown and every other county.

All of Montana — custody resources & county guides