 The population density was 4,745.0 people per square mile (1,830.5/km2).There were 4,610 housing units at an average density of 1,988.8 per square mile (767.2/km2).The racial makeup of the borough was 86.60% White, 4.39% Asian, 5.72% African American, 1.67% from other races, 0.14% Native American, 0.01% Pacific Islander, and 1.47% from two or more races.