Sully County, South Dakota | |
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Sully Courthouse in July 2013
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Location in the U.S. state of South Dakota |
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South Dakota's location in the U.S. |
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Founded | 1883 |
Named for | Alfred Sully |
Seat | Onida |
Largest city | Onida |
Area | |
• Total | 1,070 sq mi (2,771 km2) |
• Land | 1,007 sq mi (2,608 km2) |
• Water | 63 sq mi (163 km2), 5.9% |
Population (est.) | |
• (2015) | 1,426 |
• Density | 1.4/sq mi (1/km²) |
Congressional district | At-large |
Time zone | Central: UTC-6/-5 |
Website | www |
Sully County is a county located in the U.S. state of South Dakota. As of the 2010 census, the population was 1,373, making it the third-least populous county in South Dakota. Its county seat is Onida. The county was created in 1873 and organized in 1883. It is named after General Alfred Sully who built Fort Sully.
Sully County is included in the Pierre, SD Micropolitan Statistical Area.
According to the U.S. Census Bureau, the county has a total area of 1,070 square miles (2,800 km2), of which 1,007 square miles (2,610 km2) is land and 63 square miles (160 km2) (5.9%) is water.
As of the census of 2000, there were 1,556 people, 630 households, and 442 families residing in the County. The population density was 2 people per square mile (1/km²). There were 844 housing units at an average density of 1 per square mile (0/km²). The racial makeup of Sully County was 97.81% White, 0.77% Native American, 0.13% Asian, 0.13% from other races, and 1.16% from two or more races. 0.77% of the population were Hispanic or Latino of any race.