As of the census of 2000, there were 18,757 people, 4,755 households, and 2,643 families residing in the city, although a 2005 study estimates there to be a population of 19,397. The population density was 938.8 people per square mile (362.5/km2). There were 5,356 housing units at an average density of 268.1 per square mile (103.5/km2). The racial makeup of the city was 49.94% White, 47.68% African American, 0.13% Native American, 1.55% Asian, 0.01% Pacific Islander, 0.20% from other races, and 0.50% from two or more races. Hispanic or Latino people of any race were 1.23% of the population.