2010 census As of the 2010 United States Census, there were 28,836 people, 11,385 households, and 8,067 families living in the county. The population density was . There were 13,698 housing units at an average density of . The racial makeup of the county was 97.8% white, 0.5% black or African American, 0.3% American Indian, 0.2% Asian, 0.2% from other races, and 1.1% from two or more races. Those of Hispanic or Latino origin made up 0.8% of the population. In terms of ancestry, 29.2% were German, 14.4% were Irish, 11.3% were American, 9.8% were English, and 6.1% were Italian.
2010 census as of the 2010 united states census there were 28836 people 11385 households and 8067 families living in the county the population density was  there were 13698 housing units at an average density of  the racial makeup of the county was 978% white 05% black or african american 03% american indian 02% asian 02% from other races and 11% from two or more races those of hispanic or latino origin made up 08% of the population in terms of ancestry 292% were german 144% were irish 113% were american 98% were english and 61% were italian