As of the 2010 United States Census, there were 77,079 people, 31,860 households, and 21,011 families residing in the county. The population density was . There were 37,845 housing units at an average density of . The racial makeup of the county was 87.0% white, 8.6% black or African American, 0.6% Asian, 0.3% American Indian, 0.7% from other races, and 2.8% from two or more races. Those of Hispanic or Latino origin made up 3.4% of the population. In terms of ancestry, 38.8% were German, 15.2% were Irish, 11.7% were English, 8.5% were Italian, and 4.6% were American.