 There were 21,829 housing units at an average density of 26 per square mile (10/km²).The racial makeup of the county was 98.54% White, 0.30% Black or African American, 0.15% Native American, 0.22% Asian, 0.01% Pacific Islander, 0.17% from other races, and 0.60% from two or more races.0.67% of the population were Hispanic or Latino of any race.