 In terms of ancestry, 22.2% were Irish, 15.1% were French as well as 6.7% French Canadians, 14.4% were Italian, 11.7% were English, 7.0% were Polish, 6.9% were German, and 3.2% were American.Of the 303,080 households, 33.7% had children under the age of 18 living with them, 50.0% were married couples living together, 12.2% had a female householder with no husband present, 33.2% were non-families, and 26.2% of households were made up of individuals.The average household size was 2.55 and the average family size was 3.09.