 The population density was 578.2 people per square mile (223.5/km2).There were 270 housing units at an average density of 226.6 per square mile (87.6/km2).The racial makeup of the city was 97.82% White, 0.29% Native American, 1.31% Asian, 0.29% from other races, and 0.29% from two or more races.