 The population density was 1,102 people per square mile (425/km2).There were 112,570 housing units at an average density of 473 per square mile (183/km2).The racial makeup of the county was 61.3% (194,304) White, 21.76% (68,973) Black or African American, 0.35% (1109) Native American, 8.51% (26,974) Asian, 0.03% (95) Pacific Islander, 0.98% (3106) from other races, and 1.42% (4,501) from two or more races.