At the 2000 census there were 158,668 people, 62,334 households, and 41,888 families in the county. The population density was 346 people per square mile (134/km2). There were 65,649 housing units at an average density of 143 per square mile (55/km2). The racial makeup of the county was 88.54% White, 6.11% Black or African American, 0.32% Native American, 1.58% Asian, 0.02% Pacific Islander, 1.64% from other races, and 1.80% from two or more races. 4.06%. were Hispanic or Latino of any race.