The Jail System
Montana has 56 counties. According to surveys completed in 2013, there are 42 jail and adult detention facilities, with a population of 2,870 inmates.
The Prison System
As of December 31, 2015, the Montana prison population was 3,685. The Montana Department of Corrections has eight state run facilities for adults and juveniles.
The Community Corrections System
The Department of Corrections' Probation and Parole Bureau supervises approximately 9,100 offenders in the community. The Bureau has 153 officers in 23 field offices.