 The population density was 1,732.5 people per square mile (669.0/km²).There were 20,815 housing units at an average density of 777.1 per square mile (300.1/km²).The racial makeup of the city was 92.66% White, 1.87% African American, 0.13% Native American, 2.76% Asian, 0.03% Pacific Islander, 1.26% from other races, and 1.29% from two or more races.