As of the census of 2000, there were 16,822 people, 6,801 households, and 4,590 families residing in the city. The population density was 437.2 people per square mile (168.8/km). There were 7,424 housing units at an average density of 193.0 per square mile (74.5/km). The racial makeup of the city was 97.91% White, 0.32% African American, 0.15% Native American, 0.51% Asian, 0.09% Pacific Islander, 0.10% from other races, and 0.93% from two or more races. Hispanic or Latino of any race were 0.58% of the population.