File:Old_Sioux_County_Courthouse_(Fort_Yates_ND).jpg · Wikimedia Commons · See Wikimedia Commons
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
Wikidata facts
- Population
- 3898
- Area
- 2922
- Image
- Old Sioux County Courthouse (Fort Yates ND).jpg
- Households
- 1107
Show 5 more facts
- water as percent of area
- 3
- native label
- Sioux County
- Commons category
- Sioux County, North Dakota
- inception
- 1915-00-00
- per capita income
- 17460
Sources (9)
via Wikidata · CC0
~8 min read
Article
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
Gallery (2)
On the map
Connections
race and ethnicity in the United States Census
Entity
North Dakota
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Indian reservation of the United States
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Standing Rock Indian Reservation
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list of governors of North Dakota
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Ronald Reagan
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city
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South Dakota
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time zone
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Hillary Clinton
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geographic coordinate system
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Republican Party (United States)
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Democratic Party (United States)
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population density
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U.S. state
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Bismarck
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Daylight saving time
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Germans
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African Americans
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Missouri River
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