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Missoula County Detention Facility
(406) 258-4000
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Department: Missoula County Detention Facility
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Missoula County Detention Facility

The new Missoula County Detention Facility opened on November 1, 1999, replacing the over-crowded and out-dated facility on the fourth floor of the courthouse annex.

The facility has three main components - a long-term juvenile detention center, a county jail for men and women, and a state regional prison. The total capacity is almost 400.

MCDF resembles a self-contained town, with a clinic, library, school, counselors, dentist, phone system, commissary (store), banking, housing, churches, courts, and a staff that provides maintenance and security functions. We have visiting areas for families, friends, and attorneys.

The Detention Division is headed by a Captain, with a Chief Detention Officer as assistant administrator. The Detention Facility is located at 2340 Mullan Road, phone number 406-258-4000.

County Jail

The Missoula County Jail portion of the Detention Facility holds inmates that have been found guilty and sentenced to county jail time (less than one year). The facility also holds people who have been accused of a crime, and who are awaiting trial, but cannot get out on bail. We hold for several different law enforcement agencies in the area, including Missoula Police Department, Montana Highway Patrol, University of Montana Police, and the US Marshals Service.

Public Jail Roster - To return to this page, close the browser window for the Jail Roster.

Juvenile Detention

The 24-bed juvenile detention facility holds boys and girls under the age of 18, for whom there is no less secure facility which would be appropriate for them. These youth have been determined to be a risk to themselves or others, so cannot be allowed to live at home or, for example, in a group home. MCDF contracts with the Missoula school district for a teacher, so that they can continue with their school work while in custody.

MASC (Missoula Assessment and Sanction Center)

MASC is the Missoula Assessment and Sanction Center, the program currently housed in the Missoula Regional Prison portion of MCDF. When a man is found guilty and sentenced by a District Court Judge anywhere in Montana, he can be sentenced to Montana State Prison, or sentenced to the Department of Corrections. If sentenced to DOC, the prisoner comes to MASC to be "assessed" to determine an appropriate placement. He may still go to MSP, or he may be sent to Boot Camp, Pre-Release, Parole, or some other community corrections program.

If a man on parole violates the parole, he may be sent to MASC for a short "sanction", then go back out on parole.

The Montana Women's Prison in Billings has similar programs for the women of the state.

"Trying to find information on an inmate in the Montana Department of Corrections system? Visit and search the state's Correctional Offender Network website."

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