Fort Peck Indian Reservation and Off-Reservation Trust Land
Fort Peck Indian Reservation and Off-Reservation Trust Land is a federal reservation with off-reservation trust land in Roosevelt County, Valley County, Daniels County, and Sheridan County, Montana, as the Census Bureau maps it. About 9,785 people live there (2020–2024 estimate). It covers 3,289 sq mi (8,518 km²) of land.
- Population, 2020–2024 estimate
- 9,785 ± 280
- What it is
- Federal reservation · Off-reservation trust land
- Counties
- Roosevelt County53% of its landValley County34% of its landDaniels County7% of its landSheridan County6% of its land
- Land area
- 3,289 sq mi (8,518 km²)
- Median household income
- $53,489 ± $4,969
- Median home value
- $104,000 ± $11,238
- Water area
- 13.6 sq mi (35.2 km²)
- State
- Montana
- Census code
- 1250
- Coordinates (central point)
- 48.367538, -105.529709
These coordinates mark a central point for the area, not an address. Population, income and home value: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 20, 2026.
Communities in this area, largest first
- Wolf Point (city)2,602 people
- Poplar (city)635 people
- Brockton (CDP)439 people
- Frazer (CDP)387 people
- Reserve (CDP)19 people
These places’ central points lie inside the area. People counts are American Community Survey 2020–2024 5-year estimates.
Before using this answer
These Census boundaries don’t decide tribal membership, jurisdiction or land status, and they aren’t a land acknowledgment. For services, enrollment or jurisdiction, ask the tribal government.