sentences:  The population density was 909.0 people per square mile (351.0/km2).There were 73,670 housing units at an average density of 423.3 per square mile (163.4/km2).The racial makeup of the city was 64.47% White, 30.21% Black or African American, 0.54% Native American, 2.22% Asian, 0.06% Pacific Islander, 0.66% from other races, and 1.84% from two or more races.