At the 2010 United States Census, there were 50,047 people, 18,743 households and 13,773 families residing in the county. The population density was . There were 20,171 housing units at an average density of . The racial makeup of the county was 97.5% white, 0.6% black or African American, 0.4% Asian, 0.2% American Indian, 0.1% Pacific islander, 0.3% from other races, and 1.0% from two or more races. Those of Hispanic or Latino origin made up 1.0% of the population. In terms of ancestry, 46.5% were German, 19.2% were Irish, 11.4% were English, and 7.8% were American.