As of the census of 2000, there were 20,527 people, 6,486 households, and 4,682 families residing in the city. The population density was 1,021.8 people per square mile (394.5/km). There were 7,109 housing units at an average density of 353.9 per square mile (136.6/km). The racial makeup of the city was 92.06% White, 2.53% African American, 1.11% Native American, 0.47% Asian, 0.33% Pacific Islander, 1.65% from other races, and 1.86% from two or more races. Hispanic or Latino of any race were 4.14% of the population.