As of the census of 2000, there were 19,666 people, 6,498 households, and 4,756 families residing in the city. The population density was 1,778.4 people per square mile (686.5/km). There were 7,014 housing units at an average density of 634.3 per square mile (244.9/km). The racial makeup of the city was 63.56% White, 4.21% African American, 0.72% Native American, 3.25% Asian, 0.06% Pacific Islander, 23.93% from other races, and 3.27% from two or more races. 43.30% of the population were Hispanic or Latino of any race.