At the 2010 census, there were 21,160 people in 7,497 households, including 5,270 families, in the city. The population density was 813.8 people per square mile (314.9/km). There were 8,128 housing units at an average density of 312.6 per square mile (121.0/km). The racial makeup of the city was 75.9% White, 1.9% Black or African American, 0.8% Native American, 0.5% Asian, 0.1% Pacific Islander, 18.7% from other races, and 2.1% from two or more races. 27.9% of the population are Hispanic or Latino.