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Sioux County
Sign in to saveAlso known as Sioux County, North Dakota, Sioux County, ND
county in North Dakota, United States
Key facts
- Country
- United States
- State
- North Dakota
- Founded
- September 3, 1914 (created), September 12, 1914 (organized)
- Named after
- Sioux people
- Seat
- Fort Yates
- Largest community
- Cannon Ball
- Total
- 1,128.203 sq mi (2,922.03 km )
- Land
- 1,094.052 sq mi (2,833.58 km )
- Water
- 34.151 sq mi (88.45 km ) 3.03%
- Estimate 2025
- 3,667
- Density
- 3.393/sq mi (1.310/km )
- Eastern portion
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Western portion
- UTC−7 ( Mountain )
- Congressional district
- At-large
via Wikipedia infobox
~8 min read
Encyclopedic overview
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.
History
Excerpted from Wikipedia’s “Sioux County” article, available under the CC BY-SA 4.0 licence.