 In terms of ancestry, 9.5% were American, 7.0% were English, and 5.3% were Irish.Of the 26,531 households, 34.1% had children under the age of 18 living with them, 44.0% were married couples living together, 20.5% had a female householder with no husband present, 30.1% were non-families, and 26.0% of all households were made up of individuals.The average household size was 2.54 and the average family size was 3.04.