As of the 2010 United States Census, there were 226,073 people, 85,864 households, and 61,089 families residing in the county. The population density was . There were 94,196 housing units at an average density of . The racial makeup of the county was 74.8% white, 19.0% black or African American, 1.5% Asian, 0.9% American Indian, 0.1% Pacific islander, 1.9% from other races, and 1.8% from two or more races. Those of Hispanic or Latino origin made up 4.5% of the population. In terms of ancestry, 14.0% were German, 12.3% were Irish, 10.2% were English, 9.2% were American, and 6.0% were Scotch-Irish.