As of the census of 2000, there were 30,150 people, 10,957 households, and 7,965 families residing in the county. The population density was 9/km2 (24/sq mi). There were 13,096 housing units at an average density of 4/km2 (10/sq mi). The racial makeup of the county was 65.55% White, 2.92% Black or African American, 24.28% Native American, 0.17% Asian, 0.02% Pacific Islander, 2.70% from other races, and 4.36% from two or more races. 6.28% of the population were Hispanic or Latino of any race. 93.8% English, 4.5% Spanish and 1.2% Kiowa as their first language.