 The population density was 5,880.7 people per square mile (2,271.9/km2).There were 6,529 housing units at an average density of 2,529.2 per square mile (977.1/km2).The ethnic makeup of the borough was 89.61% White, 0.46% African American, 0.14% Native American, 5.61% Asian, 0.01% Pacific Islander, 2.29% from other races, and 1.87% from two or more races.