As of the census of 2000, there were 21,823 people, 7,861 households, and 6,406 families residing in the city. The population density was 472.5 people per square mile (182.5/km2). There were 8,162 housing units at an average density of 176.7 per square mile (68.2/km2). The racial makeup of the city was 94.16% White, 2.25% African American, 0.10% Native American, 2.39% Asian, 0.03% Pacific Islander, 0.23% from other races, and 0.83% from two or more races. Hispanic or Latino of any race were 1.20% of the population.