HELP US END MASS INCARCERATION
The Prison Policy Initiative uses research, advocacy, and organizing to dismantle mass incarceration. We’ve been in this movement for 24 years, thanks to individual donors like you.
Can you help us sustain this work?
Thank you,
Peter Wagner, Executive Director Donate
Can you help us sustain this work?
Thank you,
Peter Wagner, Executive Director Donate
Number of people in prison in 2020 from each Montana American Indian and Alaska Native area
| American Indian and Alaska Native areas | Number of people in state prison from each AIANA, 2020 | Census population, 2020 | Total population, 2020 | Imprisonment rate per 100,000 |
|---|---|---|---|---|
| Blackfeet Reservation | 3 | 10,866 | 10,869 | 28 |
| Crow Reservation | 10 | 7,912 | 7,922 | 126 |
| Flathead Reservation | 60 | 31,609 | 31,669 | 189 |
| Fort Belknap Reservation | 2 | 3,479 | 3,481 | 57 |
| Fort Peck Reservation | 3 | 10,166 | 10,169 | 30 |
| Northern Cheyenne Reservation | 3 | 4,633 | 4,636 | 65 |
| Rocky Boy’s Reservation | 1 | 2,138 | 2,139 | 47 |
| Rocky Boy’s Off-Reservation Trust Land | 5 | 2,157 | 2,162 | 231 |
| Turtle Mountain Off-Reservation Trust Land | 0 | 846 | 846 | 0 |
| Crow Off-Reservation Trust Land | 0 | 482 | 482 | 0 |
| Fort Peck Off-Reservation Trust Land | 0 | 104 | 104 | 0 |
Sources and methodology
- American Indian and Alaska Native areas
- This is the American Indian and Alaska Native area (AIANA) in Montana as defined by the Census Bureau. Across the country, AIANAs include reservations and trust lands, tribal jurisdiction statistical areas, Alaska Native Regional Corporations, Alaska Native village statistical areas, and tribal designated statistical areas. In Montana, there are American Indian reservations and trust lands. We included AIANAs with populations of at least 100 residents in this table.
- Number of people in state prison from each AIANA, 2020
- This is the number of people from each American Indian and Alaska Native area in state prison as of 2020. See the methodology section of the report.
- Census population, 2020
- This is the population of the American Indian and Alaska Native area as reported in the 2020 Census.
- Total population, 2020
- This is the total population of the American Indian and Alaska Native area as reflected in the 2020 Census plus the imprisoned population.
- Imprisonment rate per 100,000
- This is the number of imprisoned people divided by the total population and then multiplied by 100,000. It allows ready comparison of the frequency of imprisonment between each American Indian and Alaska Native area of different population sizes.
Recommended Reading:
50 state incarceration profiles
All of our recent reports about prison/jail growth, racial disparities, and more, re-organized by state.
The rapid & unregulated growth of e-messaging in prisons
It can strengthen connections, but instead has been used to sap money from incarcerated people.
Incarceration and supervision by states
Probation and parole are the leading forms of mass punishment in America.
Prison Gerrymandering Project
We are leading the movement to protect our democracy from the Census Bureau's prison miscount.
Events
- November 12-14, 2025:
Members of our Research team, Wendy Sawyer and Jacob Kang-Brown will be attending the American Society of Criminology annual meeting in Washington, D.C. from November 12 through the 14th. Please reach out if you’d like to set up a meeting.
Not near you?
Invite us to your city, college or organization.