 The population density was 447 people per square mile (172/km²).There were 22,166 housing units at an average density of 209 per square mile (81/km²).The racial makeup of the county was 94.50% White, 3.57% Black or African American, 0.09% Native American, 0.78% Asian, 0.03% Pacific Islander, 0.13% from other races, and 0.91% from two or more races.