High Quality Content by WIKIPEDIA articles! HAs of the census of 2000, there were 369,993 people, 149,813 households, and 104,569 families residing in the county. The population density was 361 people per square mile.Facial makeup of the county was 96.58% White, 2.01% Black or African American, 0.09% Native American, 0.52% Asian, 0.02% Pacific Islander, 0.15% from other races, and 0.64% from two or more races. 0.51% of the population were Hispanic or Latino of any race. 23.7% were of German, 18.5% Italian, 9.7% Irish, 8.9% Polish, 6.7% English, 5.2% Slovak and 5.0% American ancestry according to Census 2000. There were 149,813 households out of which 28.40% had children under the age of 18 living with them, 57.00% were married couples living together, 9.60% had a female householder with no husband present, and 30.20% were non-families. 26.90% of all households were made up of individuals and 13.30% had someone living alone who was 65 years of age or older. The average household size was 2.41 and the average family size was 2.93.

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