Roosevelt County's 2026 population is estimated at 10,274, reflecting a 0.31% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Roosevelt County is the 22nd largest county in Montana. The 2010 population was 10,444 and has grown -1.63% since 2010.
Overall: 30.9 years
Female: 32.8 years
Male: 28.9 years
There are 7,061 adults, (1,286 of whom are seniors) in Roosevelt County.
Female: 5,197 (49.4%)
Male: 5,329 (50.6%)
The racial composition of Roosevelt County includes 57.32% Native American, 32.62% White, and smaller percentages for Asian, other race, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| Native American | 6,033 | 57.32% |
| White | 3,434 | 32.62% |
| Two or more races | 935 | 8.88% |
| Asian | 100 | 0.95% |
| Other race | 16 | 0.15% |
| Black or African American | 7 | 0.07% |
| Native Hawaiian or Pacific Islander | 1 | 0.01% |
Roosevelt County 's average per capita income is $43,953. Household income levels show a median of $57,063. The poverty rate stands at 30.4%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $97,540 | - |
| Families | $71,111 | $81,488 |
| Households | $57,063 | $69,514 |
| Non Families | $38,388 | $49,723 |
Average Income
Median Household Income
Poverty Rate