sentences:  The population density was 176 people per square mile (68/km²).There were 37,427 housing units at an average density of 74 per square mile (29/km²).The racial makeup of the county was 86.01% White, 6.71% Black or African American, 0.30% Native American, 3.48% Asian, 0.21% Pacific Islander, 2.17% from other races, and 1.11% from two or more races.