 The population density was 310.9 people per square mile (120.5/km²).There were 633 housing units at an average density of 111.1 per square mile (43.1/km²).The racial makeup of the city was 95.4% White, 0.1% African American, 0.3% Native American, 0.8% Asian, 0.1% Pacific Islander, 1.2% from other races, and 2.1% from two or more races.