Major highways

Adjacent counties

2020 census

As of the 2020 census, there were 1,918 people, 651 households, and 419 families residing in the county.^[13] The population density was 1.5 inhabitants per square mile (0.58/km²). There were 775 housing units.

2010 census

As of the 2010 census, there were 2,048 people, 693 households, and 493 families in the county. The population density was 1.6 inhabitants per square mile (0.62/km²). There were 838 housing units at an average density of 0.6 units per square mile (0.23 units/km²). The racial makeup of the county was 54.1% American Indian, 39.7% white, 0.2% Asian, 0.1% black or African American, 0.2% from other races, and 5.6% from two or more races. Those of Hispanic or Latino origin made up 1.5% of the population. In terms of ancestry, 25.6% were German, 8.4% were Irish, 6.1% were English, and 0.6% were American.

Of the 693 households, 41.6% had children under the age of 18 living with them, 43.3% were married couples living together, 19.0% had a female householder with no husband present, 28.9% were non-families, and 24.7% of all households were made up of individuals. The average household size was 2.88 and the average family size was 3.38. The median age was 34.2 years.

The median income for a household in the county was $34,055 and the median income for a family was $35,781. Males had a median income of $31,625 versus $30,956 for females. The per capita income for the county was $16,971. About 23.4% of families and 27.0% of the population were below the poverty line, including 40.5% of those under age 18 and 6.3% of those age 65 or over.

City

• White River (county seat)

Town

• Wood

Census-designated places

• Corn Creek
• Horse Creek
• Norris

Unincorporated communities

• Mosher^[4]

Townships

Unorganized territories

• Cedarbutte
• Central Mellette.