As of the 2000 census, there were 74,798 people, 21,476 households, and 16,686 families living in the county. The population density was 14 people per square mile (5/km2). There were 26,718 housing units at an average density of 5 per square mile (2/km2). The racial makeup of the county was 74.72% Native American, 16.39% White, 0.46% Asian, 0.40% Black or African American, 0.04% Pacific Islander, 5.47% from other races, and 2.52% from two or more races. 12.40% of the population were Hispanic or Latino of any race.