As of the census of 2000, there were 16,751 households, and 12,278 families residing in the city. The population density was 4,765.7 people per square mile (1,840.7/km2). There were 17,120 housing units at an average density of 1,660.0 per square mile (641.1/km2). The racial makeup of the city was 48.5% White/Caucasian, 1.3% African American (1.3% by December 2006), 1.5% Native American, 3.8% Asian (7.4% by December 2006), 0.3% Pacific Islander, 21.5% from other races, and 4.9% from two or more races. Hispanic or Latino of any race were 61.8% of the population.