512.0/km (1,326.1/mi). There were 16,571 housing units at an average density of 227.9/km (640.4/mi). The racial makeup of the city was 77.23% White , 14.09% African American , 0.19% Native American , 3.90% Asian , 0.06% Pacific Islander , 3.08% from other races , and 1.46% from two or more races. Hispanic