2020 census
As of the 2020 census, there were 8,963 people living in the county. [9] Of the residents, 20.8% were under the age of 18 and 24.4% were 65 years of age or older; the median age was 48.6 years. For every 100 females there were 103.8 males, and for every 100 females age 18 and over there were 103.5 males. 0.0% of residents lived in urban areas and 100.0% lived in rural areas. [10]
The racial makeup of the county was 91.7% White, 0.2% Black or African American, 1.0% American Indian and Alaska Native, 0.3% Asian, 0.9% from some other race, and 5.9% from two or more races. Hispanic or Latino residents of any race comprised 3.0% of the population. [9]
There were 3,777 households in the county, of which 24.8% had children under the age of 18 living with them and 17.2% had a female householder with no spouse or partner present. About 26.3% of all households were made up of individuals and 13.7% had someone living alone who was 65 years of age or older. [11]
There were 4,659 housing units, of which 18.9% were vacant. Among occupied housing units, 81.0% were owner-occupied and 19.0% were renter-occupied. The homeowner vacancy rate was 1.8% and the rental vacancy rate was 7.7%. [11]
2010 census
As of the 2010 census, there were 9,117 people, 3,796 households, and 2,657 families in the county. The population density was 5.1 inhabitants per square mile (2.0/km2). There were 4,803 housing units at an average density of 2.7 units per square mile (1.0 units/km2). The racial makeup of the county was 96.8% white, 0.8% American Indian, 0.3% Asian, 0.1% black or African American, 0.4% from other races, and 1.6% from two or more races. Those of Hispanic or Latino origin made up 2.3% of the population. In terms of ancestry, 34.7% were German, 14.1% were Irish, 14.0% were English, 10.8% were Norwegian, and 6.9% were American.
Of the 3,796 households, 28.9% had children under the age of 18 living with them, 60.6% were married couples living together, 6.0% had a female householder with no husband present, 30.0% were non-families, and 25.8% of all households were made up of individuals. The average household size was 2.37 and the average family size was 2.84. The median age was 45.7 years.
The median income for a household in the county was $57,227 and the median income for a family was $65,438. Males had a median income of $51,830 versus $26,909 for females. The per capita income for the county was $27,168. About 6.0% of families and 9.5% of the population were below the poverty line, including 17.9% of those under age 18 and 7.2% of those age 65 or over.
United States
Montana 
