 In terms of ancestry, 15.8% were American, 9.0% were English, 6.7% were Irish, and 5.1% were German.Of the 9,348 households, 33.3% had children under the age of 18 living with them, 50.9% were married couples living together, 16.0% had a female householder with no husband present, 28.3% were non-families, and 24.9% of all households were made up of individuals.The average household size was 2.56 and the average family size was 3.04.