County
· North Dakota
Sioux County
Sioux County is a county located along the southern border of the U.S. state of North Dakota. As of the 2020 census, the population was 3,898, and was estimated to be 3,667 in 2025. Its eastern border is the Missouri River and the county seat is Fort Yates.
3,738 population
(2021)
·
County area: Sioux
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Cities and towns 3
Townships 1
Reference data (Census of Governments 2022)
- Census ID (PID6)
- 171338
- FIPS state
- 38
- FIPS county
- 085
- FIPS place
- 99085
- Census record name
- COUNTY OF SIOUX
- Mailing address
- PO BOX L, FORT YATES 58538