| Name | Musselshell County |
| State | Montana |
| FIPS Code | 30065 |
| County Seat | Roundup |
| Timezone | Mountain Daylight Time (MDT) |
| Population (2024) | 5,377 |
| Population Growth Rate(2020-2024) | 11.92% |
| Majority Ethnicity | White 93.31% |
| Public School Majority Ethnicity | White 88% |
| Partisan Voting Index | Strongly Republican:+36 |
| Unemployment Rate (May 2026) | 5.9% |
| Area Code(s) | 406 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 93.31% |
| African American | 0% |
| Hispanic | 3.9% |
| Asian | 0% |
| Native American | 2.79% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 88.47% |
| African American | 0.15% |
| Hispanic | 5.01% |
| Asian | 0.15% |
| Native American | 2.28% |
| Hawaiin/Pacific Islander | 0% |