Harding County is a county in the U.S. state of South Dakota. As of the 2010 census, the population was 1,255, making it the second-least populous county in South Dakota. Its county seat is Buffalo.
Harding County lies at the NW corner of South Dakota. Its western boundary line abuts the east boundary line of the state of Montana, and its north boundary line abuts the south boundary line of the state of North Dakota. Its terrain consists of high hills, generally sloping to the east. Its highest point is a ridge that runs NW-SE near the county’s SW corner, at 3,366′ (1026m) ASL.
Harding County has a total area of 2,678 square miles (6,940 km), of which 2,671 square miles (6,920 km) is land and 6.5 square miles (17 km) (0.2%) is water. It is the fourth-largest county in South Dakota by area.
As of the 2000 United States Census, there were 1,353 people, 525 households, and 352 families in the county. The population density was 0.5 people per square mile (0.2/km²). There were 804 housing units at an average density of 0.3 per square mile (0.1/km²). The racial makeup of the county, as defined by the US Census was 97.63% White, 0.30% Black or African American, 0.74% Native American, 0.59% Asian, 0.37% from other races, and 0.37% from two or more races. 1.63% of the population were Hispanic or Latino of any race. 25.9% were of German, 24.3% Norwegian, 12.8% American, 7.1% Irish and 6.6% English ancestry.
There were 525 households out of which 35.0% had children under the age of 18 living with them, 58.5% were married couples living together, 5.3% had a female householder with no husband present, and 32.8% were non-families. 31.0% of all households were made up of individuals and 14.5% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 3.19.
The county population contained 32.5% under the age of 18, 4.4% from 18 to 24, 24.8% from 25 to 44, 24.8% from 45 to 64, and 13.4% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 104.7 males. For every 100 females age 18 and over, there were 102.0 males.
The median income for a household in the county was $25,000, and the median income for a family was $31,667. Males had a median income of $25,556 versus $16,375 for females. The per capita income for the county was $12,794. About 19.40% of families and 21.10% of the population were below the poverty line, including 22.80% of those under age 18 and 22.50% of those age 65 or over.
As of the 2010 United States Census, there were 1,255 people, 539 households, and 348 families in the county. The population density was 0.5 inhabitants per square mile (0.19/km). There were 731 housing units at an average density of 0.27 per square mile (0.10/km). The racial makeup of the county was 95.9% white, 1.5% American Indian, 0.1% black or African American, 0.1% Asian, 0.7% from other races, and 1.7% from two or more races. Those of Hispanic or Latino origin made up 1.6% of the population. In terms of ancestry, 41.4% were Norwegian, 31.8% were German, 18.4% were Irish, 13.2% were English, and 2.6% were American.
Of the 539 households, 26.0% had children under the age of 18 living with them, 55.5% were married couples living together, 4.8% had a female householder with no husband present, 35.4% were non-families, and 32.1% of all households were made up of individuals. The average household size was 2.27 and the average family size was 2.87. The median age was 43.3 years.
The median income for a household in the county was $34,792 and the median income for a family was $46,111. Males had a median income of $38,929 versus $20,924 for females. The per capita income for the county was $22,004. About 13.7% of families and 16.1% of the population were below the poverty line, including 19.5% of those under age 18 and 16.9% of those age 65 or over.
Harding County South Dakota neighborhoods include: Alcester, Baltic, Black Hawk, Box Elder, Brandon, Buffalo Ridge, Camp Crook, Canton, Caputa, Central City, Chancellor, Colton, Creighton, Crooks, Custer, Deadwood, Dell Rapids, Elkton, Ellsworth Afb, Garretson, Hartford, Hermosa, Hill City, Howes, Humboldt, Keystone, Lead, Ludlow, Montrose, Nemo, New Underwood, North Sioux City, Owanka, Parker, Quinn, Rapid City, Renner, Rowena, Saint Onge, Scenic, Sherman, Silver City, Sioux Falls, Spearfish, Sturgis, Valley Springs, Wall, Wanblee, Wasta, Whitewood