sentences:  The population density was 277.8 people per square mile (82/km²).there were 69,325 housing units at an average density of 90 per square mile (35/km²).The racial makeup of the county was 83.3% White, 12.3% Black or African American, 0.5% Native American, 2.2% Asian, 0.1% Pacific Islander, 1.68% from other races, and 1.6% from two or more races.