Help End Prison Gerrymandering Prison gerrymandering funnels political power away from urban communities to legislators who have prisons in their (often white, rural) districts. More than two decades ago, the Prison Policy Initiative put numbers on the problem and sparked the movement to end prison gerrymandering.

Can you help us continue the fight? Thank you.

—Peter Wagner, Executive DirectorDonate

Montana correctional populations of Census 2010 vintage

We recommend using these addresses only for guidance in identifying prison populations in the Census data and warn against assuming that the prisons were in fact counted at that particular location.

Facility Name Prisoners Type Address City Zip County Survey Date
Alternatives Inc - Alpha House 165 Private 3109 1st Avenue N Billings 59101 Yellowstone County 12/30/2005
Anaconda-Deer Lodge Co Jail 25 Local 800 South Main Anaconda Deer Lodge 59711 3/31/2006
Beaverhead County Jail 5 Local 2s Pacific St. Dillon 59725 3/31/2006
Big Horn County Jail 22 Local 121 West Third Hardin 59034 3/31/2006
Blaine County Jail 4 Local 400 Ohio Chinook 59523 3/31/2006
Broadwater County Jail 41 Local 519 Broadway Street Townsend 59644 3/31/2006
Butte-Silver Bow Co. Det Center 64 Local 120 South Idaho Street Butte 59701-1612 3/31/2006
Cascade County Regional Jail 428 Local 3800 Ulm N. Frt. Road Great Falls 59404 3/31/2006
Chouteau County Jail 12 Local 1215 Washington Fort Benton 59442 3/31/2006
Community Counseling & Corr Services, Inc. 173 Private 66 W Broadway Butte 59701 Silver Bow Census County 12/30/2005
Crossroads Correctional Center - CCA 555 Private 75 Heath Road Shelby 59474 Toole County 12/30/2005
Dawson County Jail 18 Local 440 Colorado Blvd. Glendive 59330-3708 3/31/2006
Fallon County Jail 2 Local 10 W. Fallon Avenue Baker 59313 3/31/2006
Fergus County Jail 19 Local 121 8th Avenue, South Lewistown 59457 3/31/2006
Flathead County Detention Center 88 Local 800 South Main Street Kalispell 59901 3/31/2006
Gallatin County Detention Center 67 Local 611 South 16th Ave Bozeman 59715 3/31/2006
Glacier County Jail 6 Local 502 East Main Street Cut Bank 59427 3/31/2006
Granite County Jail 3 Local 115 Kearney Street Philipsburg 59858 3/31/2006
Great Falls Pre-Release 151 Private 1019 15th Street N Great Falls 59401 Cascade County 12/30/2005
Hill County Jail 56 Local Courthouse Havre 59501 3/31/2006
Jefferson County Jail 18 Local 110 Washington Boulder 59632-0588 3/31/2006
Lake County Jail 36 Local 106 4th Avenue, East Polson 59860 3/31/2006
Law Enforcement Center 16 Local 1010 Main St. Miles City 59301 3/31/2006
Lewis And Clark County Jail 79 Local 221 Breckenridge Street Helena 59601 3/31/2006
Liberty County Jail N/A Local Chester 59522 3/31/2006
Lincoln County Jail 24 Local 512 California Ave. Libby 59923 3/31/2006
Mineral County Jail 22 Local 310 River Street Superior 59872 3/31/2006
Missoula Correctional Services, Inc 120 Private 2350 Mullan Road Missoula 59808 Missoula County 12/30/2005
Missoula County Jail 358 Local Missoula County Detention Facility Missoula 59808 3/31/2006
Montana State Prison 1,467 State 500 Conley Lake Road Deer Lodge 59722-9707 Powell County 12/30/2005
Montana Women's Prison 262 State 701 S 27th Street Billings 59101 Deer Lodge Census County 12/30/2005
Musselshell County Jail 6 Local 820 Main Street Roundup 59072 3/31/2006
Park County Jail 19 Local 414 East Callender Livingston 59047 3/31/2006
Phillips County Jail 1 Local 314 S 2nd Ave W. Malta 59538 3/31/2006
Pondera County Jail 2 Local 20 4th Ave., S W Conrad 59425 3/31/2006
Powder River County Jail N/A Local Courthouse Square, 114 N. Park Broadus 59317 3/31/2006
Powell County Jail 6 Local 313 4th Street Deer Lodge 59722 3/31/2006
Ravalli County Jail 41 Local 205 Bedford Street Hamilton 59840 3/31/2006
Richland County Jail 7 Local 110 2nd Avenue, N.W. Sidney 59270 3/31/2006
Roosevelt County Jail 9 Local 1st And Custer Street Wolf Point 59201 3/31/2006
Rosebud County Jail 14 Local P.O. Box 85 Forsyth 59327 3/31/2006
Sanders County Jail 30 Local 115 Main Street Thompson Falls 59873 3/31/2006
Sheridan County Jail 2 Local Courthouse Plenty Wood 59254 3/31/2006
Toole County Jail 5 Local P.O. Box 550 Shelby 59474 3/31/2006
Treasure State Correctional Training Center 49 State 1100 Conley Lake Road Deer Lodge 59722 Powell County 12/30/2005
Valley County Jail 4 Local 500 Court Square #10 Glasgow 59230 3/31/2006
Wheatland County Jail N/A Local Courthouse Harlowton 59036 3/31/2006
Yellowstone County Detention Facility 398 Local 3165 King Avenue, East Billings 59101 3/31/2006

This table draws data from three sources:

  • Federal prisons on April 1, 2010: The Prison Policy Initiative downloaded the weekly population list from the Bureau of Prisons for that date on April 4, 2010.
  • State and federal correctional facilities on December 30, 2005 were extracted from: United States Department of Justice. Office of Justice Programs. Bureau of Justice Statistics. Census of State and Federal Adult Correctional Facilities, 2005 [Computer file]. ICPSR24642-v2. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2010-10-05. doi:10.3886/ICPSR24642
  • Local jails on March 31, 2006 was extracted from: United States Department of Justice. Office of Justice Programs. Bureau of Justice Statistics. Census of Jail Facilities, 2006 [Computer file]. ICPSR26602-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2010-01-26. doi:10.3886/ICPSR26602

Military prisons and state halfway houses are not included in the above table as we were not able to locate an appropriate national database of these types of facilities. Juvenile facilities are not included in the above because the Census Bureau counts these facilities separately from the adult correctional institutions that are the focus of our work. Where necessary, state-specific sources will be more useful for identifying juvenile facilities.

We do, however, have a list (without population information) of all federal halfway houses as of March 2010.

For state, federal and local prisons built or expanded in the latter half of the decade, you may find this list of New and Expanded Prisons Since 2000 helpful as well.

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