 In terms of ancestry, 11.8% were American, 9.8% were Irish, 9.6% were German, and 8.8% were English.Of the 25,525 households, 32.9% had children under the age of 18 living with them, 46.6% were married couples living together, 17.2% had a female householder with no husband present, 30.6% were non-families, and 26.1% of all households were made up of individuals.The average household size was 2.51 and the average family size was 3.00.