As of the census of 2000, there were 15,671 people, 6,163 households, and 4,301 families residing in the county. The population density was 27 people per square mile (10/km2). There were 6,545 housing units at an average density of 11 per square mile (4/km2). The racial makeup of the county was 98.70% White, 0.17% Black or African American, 0.06% Native American, 0.30% Asian, 0.03% Pacific Islander, 0.36% from other races, and 0.38% from two or more races. 0.97% of the population were Hispanic or Latino of any race.