As of the 2010 United States Census, there were 8,966 people, 3,749 households, and 2,429 families living in the county. The population density was . There were 4,233 housing units at an average density of . The racial makeup of the county was 95.7% white, 1.7% American Indian, 0.3% black or African American, 0.3% Asian, 0.3% from other races, and 1.6% from two or more races. Those of Hispanic or Latino origin made up 2.0% of the population. In terms of ancestry, 46.6% were German, 16.3% were Norwegian, 15.5% were Irish, 8.2% were English, and 6.5% were American.