As of the 2010 United States Census, there were 12,010 people, 4,475 households, and 3,010 families residing in the county. The population density was . There were 5,151 housing units at an average density of . The racial makeup of the county was 63.9% white, 31.8% black or African American, 0.9% Asian, 0.3% American Indian, 1.9% from other races, and 1.0% from two or more races. Those of Hispanic or Latino origin made up 3.9% of the population. In terms of ancestry, 21.3% were American, 11.3% were English, 7.6% were Irish, and 6.2% were German.