| Name | Sheridan County |
| State | Montana |
| FIPS Code | 30091 |
| County Seat | Plentywood |
| Timezone | Mountain Daylight Time (MDT) |
| Population (2024) | 3,490 |
| Population Growth Rate(2020-2024) | -1.49% |
| Majority Ethnicity | White 93% |
| Public School Majority Ethnicity | White 88% |
| Partisan Voting Index | Strongly Republican:+21 |
| Unemployment Rate (May 2026) | 3.6% |
| Sales Tax Rate (2025) | 0% |
| Area Code(s) | 406 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 93% |
| African American | 0% |
| Hispanic | 4.55% |
| Asian | 0.44% |
| Native American | 1.67% |
| Hawaiin/Pacific Islander | 0.33% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 87.72% |
| African American | 0% |
| Hispanic | 4.16% |
| Asian | 0.2% |
| Native American | 3.96% |
| Hawaiin/Pacific Islander | 0% |