 There were 16,989 housing units at an average density of 6.78/sqmi (2.62/km²).The racial makeup of the county was 76.66% White, 0.36% Black or African American, 20.36% Native American, 0.57% Asian, 0.02% Pacific Islander, 0.21% from other races, and 1.84% from two or more races.0.99% of the population were Hispanic or Latino of any race.