 There were 817,250 housing units at an average density of 2,888.5/km² (7,481.6/mi²).The racial makeup of the county was 44.08% White, 20.01% Black or African American, 0.50% Native American, 17.56% Asian, 0.06% Pacific Islander, 11.68% from other races, and 6.11% from two or more races.24.97% of the population were Hispanic or Latino of any race.