As of the census of 2000, there were 18,566 people, 9,476 households, and 3,553 families residing in the city. The population density was 12,982.4 inhabitants per square mile (5,012.8/km2). There were 9,840 housing units at an average density of 6,880.7 per square mile (2,656.8/km2). The racial makeup of the city was 89.58% White, 0.80% Black or African American, 0.40% Native American, 4.40% Asian, 0.22% Pacific Islander, 1.68% from other races, and 2.91% from two or more races. 4.82% of the population were Hispanic or Latino of any race.