Corson County, South Dakota

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Corson County, South Dakota
Corson County Courthouse.jpg
Corson County Courthouse in McIntosh, South Dakota in 1993. This building was destroyed by fire on April 10, 2006.
Map of South Dakota highlighting Corson County
Location in the state of South Dakota
Map of the United States highlighting South Dakota
South Dakota's location in the U.S.
Founded 1909
Named for Dighton Corson
Seat McIntosh
Largest city McLaughlin
 • Total 2,529 sq mi (6,551 km2)
 • Land 2,473 sq mi (6,405 km2)
 • Water 56 sq mi (146 km2), 2.23%
 • (2010) 4,050
 • Density 1.7/sq mi (0.7/km²)
Congressional district At-large
Time zone Mountain: UTC-7/-6
Triceratops skull from Corson County. Collections of Houston Museum of Natural Science.

Corson County is a county located in the U.S. state of South Dakota. As of the 2010 census, the population was 4,050.[1] Its county seat is McIntosh.[2] The county was named for Dighton Corson, a native of Maine, who came to the Black Hills in 1876, and in 1877 began practicing law at Deadwood.

The county is encompassed within the Standing Rock Indian Reservation, which extends into North Dakota. The Lakota people reside primarily in the South Dakota part of the reservation; the Yanktonai and Dakota live in that part in North Dakota. The Grand River, a tributary of the Missouri River, runs through the reservation.


According to the U.S. Census Bureau, the county has a total area of 2,529.6 square miles (6,551.6 km2), of which 2,469.7 square miles (6,396.5 km2) is land and 60 square miles (155.4 km2) (2.4%) is water.[3] The entire county lies within the Standing Rock Indian Reservation, which also includes Sioux, Ziebach, and Dewey counties.

Major highways[edit]

Adjacent counties[edit]

National protected area[edit]


Historical population
Census Pop.
1910 2,929
1920 7,249 147.5%
1930 9,535 31.5%
1940 6,755 −29.2%
1950 6,168 −8.7%
1960 5,798 −6.0%
1970 4,994 −13.9%
1980 5,196 4.0%
1990 4,195 −19.3%
2000 4,181 −0.3%
2010 4,050 −3.1%
Est. 2013 4,215 4.1%
U.S. Decennial Census[4]
2013 Estimate[1]

As of the census[5] of 2000, there were 4,181 people, 1,271 households, and 949 families residing in the county. The population density was 1.7 people per square mile (0.7/km²). There were 1,536 housing units at an average density of 0.6 per square mile (0.2/km²). The racial makeup of the county was 60.80% Native American, 37.19% White, 0.10% Black or African American, 0.05% Asian, 0.22% from other races, and 1.65% from two or more races. 2.13% of the population were Hispanic or Latino of any race. 27.3% were of German ancestry.

There were 1,271 households out of which 38.3% had children under the age of 18 living with them, 46.8% were married couples living together, 19.7% had a female householder with no husband present, and 25.3% were non-families. 22.1% of all households were made up of individuals and 10.0% had someone living alone who was 65 years of age or older. The average household size was 3.29 and the average family size was 3.82.

In the county, the population was spread out with 36.9% under the age of 18, 9.8% from 18 to 24, 24.3% from 25 to 44, 18.5% from 45 to 64, and 10.5% who were 65 years of age or older. The median age was 28 years. For every 100 females there were 102.0 males. For every 100 females age 18 and over, there were 100.8 males.

The median income for a household in the county was $20,654, and the median income for a family was $23,889. Males had a median income of $22,717 versus $19,609 for females. The per capita income for the county was $8,615. About 32.80% of families and 41.00% of the population were below the poverty line, including 48.60% of those under age 18 and 32.70% of those age 65 or over. The county's per-capita income makes it one of the poorest counties in the United States.


Entering Corson County along Highway 63

2010 United States Census population[6]


The county is divided into eleven townships: Custer, Delaney, Lake, Mission, Pleasant Ridge, Prairie View, Ridgeland, Rolling Green, Sherman, Wakpala, and Watauga; and four areas of unorganized territory: Central Corson, Lemmon No. 2, Northeast Corson, and West Corson.

Notable residents[edit]

See also[edit]


  1. ^ a b "State & County QuickFacts". United States Census Bureau. Retrieved November 26, 2013. 
  2. ^ "Find a County". National Association of Counties. Retrieved 2011-06-07. 
  3. ^ "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23. 
  4. ^ "U.S. Decennial Census". Retrieved March 28, 2014. 
  5. ^ "American FactFinder". United States Census Bureau. Retrieved 2011-05-14. 
  6. ^ "Incorporated Places and Minor Civil Divisions: South Dakota". Population Census. 2010 United States Census. 2011-07-18. Retrieved 2011-08-04. 

Coordinates: 45°43′N 101°11′W / 45.72°N 101.18°W / 45.72; -101.18