 There were 21,621 housing units at an average density of 62.5/sqmi (24.1/km²).The racial makeup of the county was 97.97% White, 0.56% Black or African American, 0.16% Native American, 0.58% Asian, 0.02% Pacific Islander, 0.13% from other races, and 0.59% from two or more races.0.51% of the population were Hispanics or Latinos of any race.