As of the census of 2000, there were 80,023 people, 31,222 households, and 22,042 families residing in the county. The population density was 74 people per square mile (29/km2). There were 37,163 housing units at an average density of 35 per square mile (13/km2). The racial makeup of the county was 97.39% White, 1.59% Black or African American, 0.08% Native American, 0.21% Asian, 0.01% Pacific Islander, 0.31% from other races, and 0.40% from two or more races. 0.66% of the population were Hispanic or Latino of any race. 41.5% were of German, 10.4% American, 7.4% Italian, 6.4% Irish, 6.4% Polish and 5.8% English ancestry.