sentences:  There were 30,992 housing units at an average density of .The racial makeup of the county was 72.7% white, 6.7% American Indian, 3.5% black or African American, 1.2% Asian, 0.2% Pacific islander, 11.5% from other races, and 4.2% from two or more races.Those of Hispanic or Latino origin made up 34.5% of the population.