 The population density was 2,346.9 people per square mile (906.2/km²).There were 4,466 housing units at an average density of 1,017.3/sq mi (392.8/km²).The racial makeup of the city was 97.04% White, 0.18% African American, 0.37% Native American, 0.67% Asian, 0.02% Pacific Islander, 0.62% from other races, and 1.10% from two or more races.