As of the census of 2000, there were 6,880 people, 2,938 households, and 1,824 families residing in the city. The population density was 1,286.2 people per square mile (496.5/km). There were 3,270 housing units at an average density of 611.3 per square mile (236.0/km). The racial makeup of the city was 98.72% White, 0.29% African American, 0.15% Native American, 0.28% Asian, 0.06% from other races, and 0.51% from two or more races. Hispanic or Latino of any race were 0.51% of the population.