As of the census of 2006, there were 23,194 people in 5,596 households, including 4,538 families, in the city. The population density was 4,475.7 people per square mile (1,729.8/km). There were 5,815 housing units at an average density of 1,338.5 per square mile (517.3/km). The racial makeup of the city was 43.90% White, 0.75% Black or African American, 1.56% Native American, 3.18% Asian, 0.03% Pacific Islander, 46.09% from other races, and 4.48% from two or more races. 71.75% of the population were Hispanic or Latino of any race.