 In terms of ancestry, 16.8% were German, 14.2% were American, 9.0% were English, and 7.7% were Irish.Of the 14,709 households, 32.1% had children under the age of 18 living with them, 46.3% were married couples living together, 17.2% had a female householder with no husband present, 31.1% were non-families, and 27.0% of all households were made up of individuals.The average household size was 2.47 and the average family size was 2.97.