As of the 2010 United States Census, there were 38,827 people, 15,365 households, and 10,140 families residing in the county. The population density was . There were 16,954 housing units at an average density of . The racial makeup of the county was 88.4% white, 8.4% black or African American, 0.6% Asian, 0.2% American Indian, 0.8% from other races, and 1.6% from two or more races. Those of Hispanic or Latino origin made up 2.1% of the population. In terms of ancestry, 24.3% were German, 15.8% were Irish, 13.6% were English, and 10.2% were American.