As of the 2000 census, there were 31,002 people, 12,146 households, and 8,514 families living in the county. The population density was 8 people per square mile (3/km2). There were 14,066 housing units at an average density of 4 per square mile (1/km2). The racial makeup of the county was 75.67% White, 0.52% Black or African American, 1.35% Native American, 0.29% Asian, 0.03% Pacific Islander, 19.02% from other races, and 3.11% from two or more races. 48.79% of the population were Hispanic or Latino of any race.