As of the 2010 United States Census, there were 21,403 people, 7,978 households, and 5,587 families in the county. The population density was 14.48/sqmi (5.59/km2). There were 9,551 housing units with an average density of 6.46/sqmi (2.50/km2). The racial makeup of the county was 92.31% White, 0.43% Black or African American, 1.18% Native American, 0.58% Asian, 0.01% Pacific Islander, 3.03% from other races, and 2.36% from two or more races. 12.42% of the population were Hispanic or Latino of any race.