| Name | Sioux County |
| State | Iowa |
| FIPS Code | 19167 |
| County Seat | Orange City |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 33,776 |
| Population Growth Rate(2000-2022) | 6.43% |
| Majority Ethnicity | White 98.62% |
| Public School Majority Ethnicity | White 62% |
| Partisan Voting Index | Strongly Republican:+36 |
| Unemployment Rate (February 2025) | 1.7% |
| Area Code(s) | 712 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 98.62% |
| African American | 0.55% |
| Hispanic | 0.31% |
| Asian | 0.48% |
| Native American | 0.02% |
| Hawaiin/Pacific Islander | 0.02% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 62.45% |
| African American | 1.04% |
| Hispanic | 33.74% |
| Asian | 0.67% |
| Native American | 0.28% |
| Hawaiin/Pacific Islander | 0.19% |