| Name | Big Horn County |
| State | Montana |
| FIPS Code | 30003 |
| County Seat | Hardin |
| Timezone | Mountain Standard Time (MST) |
| Population (2022) | 12,872 |
| Population Growth Rate(2000-2022) | 2.01% |
| Majority Ethnicity | Hispanic 68.82% |
| Public School Majority Ethnicity | Native American 83% |
| Partisan Voting Index | Democratic:+4 |
| Unemployment Rate (December 2024) | 3.6% |
| Area Code(s) | 406 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 30.96% |
| African American | 0% |
| Hispanic | 68.82% |
| Asian | 0.23% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 8.87% |
| African American | 0.11% |
| Hispanic | 4.79% |
| Asian | 0.08% |
| Native American | 82.91% |
| Hawaiin/Pacific Islander | 0.19% |