 The population density was 425 people per square mile (164/km²).There were 99,250 housing units at an average density of 177 per square mile (68/km²).The racial makeup of the county was 84.57% White, 9.73% Black or African American, 0.41% Native American, 1.83% Asian, 0.03% Pacific Islander, 1.27% from other races, and 2.15% from two or more races.