| Name | Blaine County |
| State | Montana |
| FIPS Code | 30005 |
| County Seat | Chinook |
| Timezone | Mountain Standard Time (MST) |
| Population (2022) | 6,514 |
| Population Growth Rate(2000-2022) | 8.52% |
| Majority Ethnicity | Hispanic 53.83% |
| Public School Majority Ethnicity | Native American 65% |
| Partisan Voting Index | Democratic:+1 |
| Unemployment Rate (January 2025) | 3.0% |
| Area Code(s) | 406 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 45.3% |
| African American | 0.83% |
| Hispanic | 53.83% |
| Asian | 0.04% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 29.24% |
| African American | 0.08% |
| Hispanic | 2.05% |
| Asian | 0.08% |
| Native American | 64.85% |
| Hawaiin/Pacific Islander | 0.23% |