 The population density was 496 people per square mile (192/km²).There were 83,146 housing units at an average density of 189 per square mile (73/km²).The racial makeup of the county was 86.77% White, 9.27% African-American, 0.23% Native American, 1.52% Asian, 0.06% Pacific Islander, 0.69% from other races, and 1.47% from two or more races.