As of the 2010 census, there were 29,514 people, 12,586 households, and 7,941 families living in the county. The population density was . There were 14,693 housing units at an average density of . The racial makeup of the county was 84.9% white, 1.4% American Indian, 0.9% black or African American, 0.4% Asian, 0.1% Pacific islander, 9.6% from other races, and 2.8% from two or more races. Those of Hispanic or Latino origin made up 48.3% of the population. In terms of ancestry, 11.9% were English, 11.8% were German, 10.4% were Irish, and 2.9% were American.