population density was 537.5/km² (1,392.3/mi²). There were 21,290 housing units at an average density of 232.1/km² (601.3/mi²). The racial makeup of the city was 80.82% White , 12.71% African American , 0.23% Native American , 1.95% Asian , 0.12% Pacific Islander , 2.16% from other races , and 2.01% from two