 The population density was 12,242.2/km² (31,709.3/mi²).There were 490,659 housing units at an average density of 4,507.4/km² (11,674.8/mi²).The racial makeup of the borough was 35.64% Black or African American, 29.87% White, 0.85% Native American, 3.01% Asian, 0.10% Pacific Islander, 24.74% from other races, and 5.78% from two or more races.