As of the 2010 United States Census, there were 34,185 people, 13,310 households, and 9,153 families in the county. The population density was . There were 19,377 housing units at an average density of . The racial makeup of the county was 96.8% white, 0.5% black or African American, 0.5% Asian, 0.3% American Indian, 0.9% from other races, and 0.9% from two or more races. Those of Hispanic or Latino origin made up 2.9% of the population. In terms of ancestry, 37.8% were German, 12.6% were English, 10.5% were Irish, and 8.2% were American.