 There were 18,941 housing units at an average density of 34.4/sqmi (13.3/km²).The racial makeup of the county was 98.54% White, 0.43% Black or African American, 0.12% Native American, 0.15% Asian, 0.01% Pacific Islander, 0.21% from other races, and 0.54% from two or more races.0.69% of the population were Hispanic or Latino of any race.