Granite County /

Granite County is a county located in the U.S. state of Montana. As of 2010, the population was 3,079. Its county seat is Philipsburg. According to the U.S. Census Bureau, the county has a total area of 1,733 square miles (4,488.4 km), of which 1,727 square miles (4,472.9 km) is land and 6 square miles (15.5 km) (0.33%) is water. As of the census of 2000, there were 2,830 people, 1,200 households, and 784 families residing in the county. The population density was 2 people per square mile (1/km²). There were 2,074 housing units at an average density of 1 per square mile (0/km²). The racial makeup of the county was 96.25% White, 1.27% Native American, 0.14% Asian, 0.04% Pacific Islander, 0.46% from other races, and 1.84% from two or more races. 1.27% of the population were Hispanic or Latino of any race. 17.8% were of German, 13.5% English, 13.1% Irish, 8.3% American and 7.2% Norwegian ancestry according to Census 2000. There were 1,200 households out of which 27.10% had children under the age of 18 living with them, 54.70% were married couples living together, 7.40% had a female householder with no husband present, and 34.60% were non-families. 30.10% of all households were made up