As of the 2010 United States Census, there were 75,087 people, 29,177 households, and 17,959 families residing in the county. The population density was . There were 33,311 housing units at an average density of . The racial makeup of the county was 89.2% white, 8.0% black or African American, 0.8% Asian, 0.1% American Indian, 0.2% from other races, and 1.6% from two or more races. Those of Hispanic or Latino origin made up 1.4% of the population. In terms of ancestry, 31.8% were German, 14.6% were Irish, 11.9% were English, 11.8% were American, and 5.6% were Italian.