As of the 2010 United States Census, there were 9,285 people, 3,837 households, and 2,571 families in the county. The population density was . There were 4,629 housing units at an average density of . The racial makeup of the county was 86.6% white, 8.7% Native American, 0.3% black or African American, 0.3% Asian, 0.1% Pacific islander, 0.5% from other races, and 3.6% from two or more races. Those of Hispanic or Latino origin made up 2.5% of the population. In terms of European ancestry, 23.7% were German, 17.5% were Irish, 14.6% were English, 7.1% were Norwegian, and 3.4% were American.