| Name | Richland County |
| State | Montana |
| FIPS Code | 30083 |
| County Seat | Sidney |
| Timezone | Mountain Standard Time (MST) |
| Population (2022) | 9,961 |
| Population Growth Rate(2000-2022) | 17.9% |
| Majority Ethnicity | White 97.43% |
| Public School Majority Ethnicity | White 86% |
| Partisan Voting Index | Strongly Republican:+32 |
| Unemployment Rate (November 2024) | 2.9% |
| Area Code(s) | 406 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 97.43% |
| African American | 0.21% |
| Hispanic | 0.17% |
| Asian | 0.12% |
| Native American | 1.03% |
| Hawaiin/Pacific Islander | 1.03% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 85.54% |
| African American | 0.82% |
| Hispanic | 7.1% |
| Asian | 1.12% |
| Native American | 2.76% |
| Hawaiin/Pacific Islander | 0.05% |