 The population density was 3,281 people per square mile (1,267/km²).There were 206,448 housing units at an average density of 1,325 per square mile (512/km²).The racial makeup of the county was 77.37% White, 7.61% Black or African American, 0.83% Native American, 8.77% Asian, 0.06% Pacific Islander, 2.45% from other races, and 2.90% from two or more races.