Stillwater County, Montana


Stillwater County is a county in the U.S. state of Montana. As of the 2020 [United States census|2020 census], the population was 8,963. Its county seat is Columbus.

Geography

According to the United States Census Bureau, the county has a total area of, of which is land and is water.

Major highways

Adjacent counties

National protected areas

Demographics

2020 census

As of the 2020 census, there were 8,963 people living in the county. 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.
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.
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.
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%.

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. There were 4,803 housing units at an average density of. 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.

Politics

Stillwater County is a heavily Republican county in presidential elections. It has not voted for a Democratic presidential candidate since Franklin D. Roosevelt in 1936.

Communities

Town

Census-designated places

Unincorporated communities

Ghost towns