As of the 2000 census, there were 41,190 people, 15,044 households, and 10,816 families living in the county. The population density was 7 people per square mile (3/km2). There were 18,016 housing units at an average density of 3 per square mile (1/km2). The racial makeup of the county was 56.62% White, 0.35% Black or African American, 13.88% Native American, 0.14% Asian, 0.11% Pacific Islander, 25.62% from other races, and 3.28% from two or more races. 72.89% of the population were Hispanic or Latino of any race.