As of the census of 2000, there were 20,203 people, 7,955 households, and 5,640 families residing in the county. The population density was 32 people per square mile (12/km2). There were 11,185 housing units at an average density of 17 per square mile (7/km2). The racial makeup of the county was 98.04% White, 0.83% Black or African American, 0.24% Native American, 0.16% Asian, 0.02% Pacific Islander, 0.12% from other races, and 0.59% from two or more races. 0.55% of the population were Hispanic or Latino of any race.