| Name | Yellowstone County |
| State | Montana |
| FIPS Code | 30111 |
| Timezone | Mountain Daylight Time (MDT) |
| Population (2022) | 148,191 |
| Population Growth Rate(2000-2022) | 11.33% |
| Majority Ethnicity | White 88.11% |
| Public School Majority Ethnicity | White 79% |
| Partisan Voting Index | Republican:+10 |
| Unemployment Rate | 3.4% |
| Race/Ethnicy | Percentage of Population (2018) |
|---|---|
| White | 88.11% |
| African American | 0.84% |
| Hispanic | 0.14% |
| Asian | 0.77% |
| Native American | 6.24% |
| Hawaiin/Pacific Islander | 3.89% |
| Race/Ethnicy | Percentage of Public School Students (2018) |
|---|---|
| White | 78.64% |
| African American | 1.18% |
| Hispanic | 7.86% |
| Asian | 0.57% |
| Native American | 5.69% |
| Hawaiin/Pacific Islander | 0.31% |