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Sioux County, North Dakota
Map of North Dakota highlighting Sioux County
Location in the state of North Dakota
Map of USA ND
North Dakota's location in the U.S.
Founded 1914
Seat Fort Yates
Largest city Cannon Ball
 - Total
 - Land
 - Water

1,128 sq mi (2,922 km²)
1,094 sq mi (2,833 km²)
34 sq mi (88 km²), 3.03%
 - (2010)
 - Density

3/sq mi (1/km²)

Sioux County is a county located in the U.S. state of North Dakota. As of 2010, the population was 4,153.[1] Its county seat is Fort Yates.[2]

The county lies entirely within the Standing Rock Indian Reservation, forming the northernmost 30 percent of the reservation. (The balance of the reservation is in South Dakota). It is the only county in North Dakota that is entirely within an Indian reservation.

The county was created by proclamation of Governor Louis B. Hanna on September 3, 1914 and named after the Native Americans who live on the reservation. The county government was first organized on September 12, 1914; Fort Yates has always been the county seat.[3]


According to the U.S. Census Bureau, the county has a total area of 1,128 square miles (2,922 km²), of which, 1,094 square miles (2,834 km²) of it is land and 34 square miles (89 km²) of it (3.03%) is water.

Major highwaysEdit


  • Menz

Adjacent countiesEdit

National protected areaEdit


Historical populations
Census Pop.
1920 3,308
1930 4,687 41.7%
1940 4,419 −5.7%
1950 3,696 −16.4%
1960 3,662 −0.9%
1970 3,632 −0.8%
1980 3,620 −0.3%
1990 3,761 3.9%
2000 4,044 7.5%
2010 4,153 2.7%
U.S. Decennial Census

As of the census[4] of 2000, there were 4,044 people, 1,095 households, and 871 families residing in the county. The population density was 4 people per square mile (1/km²). There were 1,216 housing units at an average density of 1 per square mile (0/km²). The racial makeup of the county was 84.59% Native American, 14.34% White, 0.02% Black or African American, 0.02% Asian, 0.05% Pacific Islander, 0.07% from other races, and 0.89% from two or more races. 1.61% of the population were Hispanic or Latino of any race. 11.5% were of German ancestry according to Census 2000.

There were 1,095 households out of which 48.90% had children under the age of 18 living with them, 39.10% were married couples living together, 29.10% had a female householder with no husband present, and 20.40% were non-families. 16.60% of all households were made up of individuals and 4.40% had someone living alone who was 65 years of age or older. The average household size was 3.63 and the average family size was 3.98.

In the county the population was spread out with 40.30% under the age of 18, 11.10% from 18 to 24, 26.90% from 25 to 44, 16.20% from 45 to 64, and 5.60% who were 65 years of age or older. The median age was 24 years. For every 100 females there were 104.20 males. For every 100 females age 18 and over, there were 99.70 males.

The median income for a household in the county was $22,483, and the median income for a family was $24,000. Males had a median income of $22,039 versus $19,458 for females. The per capita income for the county was $7,731. About 33.60% of families and 39.20% of the population were below the poverty line, including 44.40% of those under age 18 and 25.80% of those age 65 or over. The county's per-capita income makes it one of the poorest counties in the United States.



Note: all incorporated communities in North Dakota are called "cities" regardless of their size.

Census-designated placesEdit

See alsoEdit


Coordinates: 46°07′N 101°03′W / 46.11, -101.05

This page uses content from the English language Wikipedia. The original content was at Sioux County, North Dakota. The list of authors can be seen in the page history. As with this Familypedia wiki, the content of Wikipedia is available under the Creative Commons License.

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