 The population density was 561.9 people per square mile (217.0/km²).There were 8,541 housing units at an average density of 224.8 per square mile (86.8/km²).The racial makeup of the city was 81.2% White, 7.5% Black or African American, 0.3% Native American, 2.4% Asian, 6.9% from other races, and 1.6% from two or more races.