| Name | Stillwater County |
| State | Montana |
| FIPS Code | 30095 |
| County Seat | Columbus |
| Timezone | Mountain Standard Time (MST) |
| Population (2022) | 9,096 |
| Population Growth Rate(2000-2022) | -1.69% |
| Majority Ethnicity | White 99.05% |
| Public School Majority Ethnicity | White 90% |
| Partisan Voting Index | Strongly Republican:+27 |
| Unemployment Rate (January 2025) | 2.2% |
| Area Code(s) | 406 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 99.05% |
| African American | 0.09% |
| Hispanic | 0.43% |
| Asian | 0.43% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 90.41% |
| African American | 0.29% |
| Hispanic | 4.42% |
| Asian | 0.52% |
| Native American | 1.92% |
| Hawaiin/Pacific Islander | 0.07% |