 In terms of ancestry, 6.4% were Irish, 6.3% were American, 5.6% were German, and 5.3% were English.Of the 7,598 households, 35.8% had children under the age of 18 living with them, 44.0% were married couples living together, 19.1% had a female householder with no husband present, 31.4% were non-families, and 28.1% of all households were made up of individuals.The average household size was 2.57 and the average family size was 3.15.