(903.0/km 2 ). There were 21,766 housing units at an average density of 832.8/sq mi (321.5/km 2 ). The racial makeup of the city was 76.76% White , 7.72% African American , 0.50% Native American , 2.89% Asian , 0.10% Pacific Islander , 9.47% from other races , and 2.56% from two