1,630.3/km² (4,222.5/mi²). There are 190,724 housing units at an average density of 649.9/km² (1,683.3/mi²). The racial makeup of the city was 69.86% White , 10.36% African American , 0.75% Native American , 4.78% Asian , 0.45% Pacific Islander , 9.75% from other races , and 4.05% from two or more races. 23.61%