As of the census of 2000, there were 39,188 people, 15,105 households, and 10,664 families living in the county. The population density was 93 people per square mile (36/km2). There were 16,140 housing units at an average density of 38 per square mile (15/km2). The racial makeup of the county was 96.51% White, 0.72% Black or African American, 0.23% Native American, 0.52% Asian, 0.01% Pacific Islander, 1.19% from other races, and 0.83% from two or more races. 2.68% of the population were Hispanic or Latino of any race. 43.6% were of German, 17.7% American, 8.1% English and 5.8% Irish ancestry according to Census 2000.