As of the 2010 census, there were 107,449 people, 35,658 households, and 25,923 families living in the county. The population density was . There were 56,938 housing units at an average density of . The racial makeup of the county was 49.3% white, 43.4% American Indian, 0.9% black or African American, 0.5% Asian, 0.1% Pacific islander, 3.4% from other races, and 2.5% from two or more races. Those of Hispanic or Latino origin made up 10.8% of the population. In terms of ancestry, 13.7% were German, 12.5% were English, 9.3% were Irish, and 2.3% were American.