 The population density was 628 people per square mile (242/km²).The 111,733 housing units averaged 280 per square mile (108/km²).The racial makeup of the county was 72.69% White, 15.44% Black or African American, 0.47% Native American, 2.10% Asian, 0.04% Pacific Islander, 7.18% from other races, and 2.08% from two or more races.