| Name | Sioux County |
| State | North Dakota |
| FIPS Code | 38085 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 4,193 |
| Population Growth Rate(2000-2022) | -6.14% |
| Majority Ethnicity | Native American 82.73% |
| Public School Majority Ethnicity | Native American 98% |
| Partisan Voting Index | Democratic:+18 |
| Unemployment Rate | 2.4% |
| Race/Ethnicy | Percentage of Population (2018) |
|---|---|
| White | 12.9% |
| African American | 0.13% |
| Hispanic | 4.19% |
| Asian | 0% |
| Native American | 82.73% |
| Hawaiin/Pacific Islander | 0.04% |
| Race/Ethnicy | Percentage of Public School Students (2018) |
|---|---|
| White | 1.08% |
| African American | 0.07% |
| Hispanic | 0.07% |
| Asian | 0% |
| Native American | 98.41% |
| Hawaiin/Pacific Islander | 0.14% |