As of the census of 2000, there were 152,061 people, 56,449 households, and 39,175 families living in the county. The population density was 309 people per square mile (119/km2). There were 60,096 housing units at an average density of 122 per square mile (47/km2). The racial makeup of the county was 94.40% White, 3.18% Black or African American, 0.18% Native American, 0.82% Asian, 0.01% Pacific Islander, 0.22% from other races, and 1.19% from two or more races. 0.72% of the population were Hispanic or Latino of any race. 23.5% were of German, 11.0% Irish, 9.9% Italian, 9.7% English, 9.7% American and 5.2% Polish ancestry according to Census 2000. 96.1% spoke English and 1.2% Spanish as their first language.