As of the census of 2000, there were 22,638 people, 9,478 households, and 6,397 families residing in the city. The population density was 1,203.4 people per square mile (464.7/km). There were 9,938 housing units at an average density of 528.3 per square mile (204.0/km). The racial makeup of the city was 97.32% White, 0.47% African American, 0.24% Native American, 0.66% Asian, 0.01% Pacific Islander, 0.44% from other races, and 0.86% from two or more races. Hispanic or Latino of any race were 1.29% of the population.