 The population density was 1,780.9 people per square mile (687.5/km2).There were 3,404 housing units at an average density of 625.8 per square mile (241.6/km2).The racial makeup of the city was 94.08% White, 0.60% African American, 1.02% Native American, 1.27% Asian, 0.07% Pacific Islander, 0.62% from other races, and 2.33% from two or more races.