 There were 661,958 housing units with an average density of 4,900.1/sq mi (1,891.9/km²).and the racial composition of the county was 45.0% White, 43.2% African American, 5.5% Asian, 0.3% Native American, 0.1% Pacific Islander, 5.8% from other races, and 2.2% from two or more races.Hispanic or Latino of any race were 8.5% of the population.