Sioux County, North Dakota

Founding: 1914
Parent county: Standing Rock Reservation

Namesake: The Sioux (or Lakota) tribe
Seat: Fort Yates (1914–)

Land area: 1,094 square miles

Population (2020): 3,898

Population (historic): 3,308 (1920); 4,687 (1930)

Periods of population growth: pre-1920–1930

Subdivisions: Three cities; two CDPs

National Register listings: One

Pre-1940 residences (estimated): 118 (8.7%)
Pre-1940 housing survival rate: 10.8%

Farm housing in disrepair (1950): 9.6%

Nonfarm housing in disrepair (1950): 23.6%

Average farmhouse value (1930): $656
Average outbuilding value (1930): $713
Average farmhouse size (1940): 3.6 rooms
Number of farms (1920): 472
Average farm size (1920): 262 acres
Sources of settlement: North Dakota, South Dakota, Russia, and Minnesota
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Fort Yates

Namesake: Fort Yates

Founding: 1863 (founding of army post); 1879 (post office)

Population (2020): 176

Population (historic): 446 (1880); 511 (1890)

Pre-1940 residences (estimated): 4 (6.5%)
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