population density was 555.7/km² (1,439.2/mi²). There were 14,769 housing units at an average density of 216.1/km² (559.6/mi²). The racial makeup of the city was 93.45% White , 1.42% African American , 0.17% Native American , 3.50% Asian , 0.02% Pacific Islander , 0.31% from other races , and 1.13% from two