As of the 2010 United States Census, there were 8,962 people, 3,897 households, and 2,600 families residing in the county. The population density was 4.25/sqmi (1.64/km2). There were 5,590 housing units at an average density of 2.65/sqmi (1.02/km2). The racial makeup of the county was 91.0% white, 7.0% American Indian, 0.1% black or African American, 0.1% Asian, 0.2% from other races, and 1.5% from two or more races. Those of Hispanic or Latino origin made up 1.2% of the population. In terms of ancestry, 54.4% were German, 24.6% were Norwegian, 6.5% were Irish, 5.6% were Swedish, 5.1% were English, and 3.6% were American.