 In terms of ancestry, 12.6% were German, 10.8% were Irish, 8.7% were English, 6.3% were American, and 5.1% were Italian.Of the 51,214 households, 41.6% had children under the age of 18 living with them, 54.2% were married couples living together, 16.3% had a female householder with no husband present, 24.6% were non-families, and 19.8% of all households were made up of individuals.The average household size was 2.83 and the average family size was 3.24.