Granite County is a county located in the U.S. state of Montana. As of the 2020 census, the population was 3,309. Its county seat is Philipsburg. The county was founded in 1893, and was named for a mountain which contains the Granite Mountain silver mine.

Geography

According to the United States Census Bureau, the county has a total area of 1733 sqmi, of which 1727 sqmi is land and 5.6 sqmi (0.3%) is water.

Major highways

Adjacent counties

National protected areas

Politics

Demographics

2020 census

As of the 2020 census, there were 3,309 people living in the county.

2010 census

As of the 2010 census, there were 3,079 people, 1,417 households, and 911 families living in the county. The population density was 1.8 PD/sqmi. There were 2,822 housing units at an average density of 1.6 /sqmi. The racial makeup of the county was 97.5% white, 0.4% American Indian, 0.1% black or African American, 0.1% Asian, 0.2% from other races, and 1.7% from two or more races. Those of Hispanic or Latino origin made up 1.4% of the population. In terms of ancestry, 26.2% were German, 20.2% were Irish, 18.8% were English, 13.5% were Norwegian, and 7.9% were American. Of the 1,417 households, 19.6% had children under the age of 18 living with them, 55.3% were married couples living together, 5.7% had a female householder with no husband present, 35.7% were non-families, and 29.5% of all households were made up of individuals. The average household size was 2.14 and the average family size was 2.63. The median age was 52.1 years. The median income for a household in the county was $36,052 and the median income for a family was $47,685. Males had a median income of $41,307 versus $23,958 for females. The per capita income for the county was $23,222. About 7.5% of families and 12.1% of the population were below the poverty line, including 5.4% of those under age 18 and 13.3% of those age 65 or over.

Communities

Towns

Census-designated places

Unincorporated communities

Ghost Towns