sentences:  In terms of ancestry, 22.4% were German, 15.3% were American, 10.8% were English, and 10.2% were Irish.Of the 34,301 households, 30.7% had children under the age of 18 living with them, 48.3% were married couples living together, 13.1% had a female householder with no husband present, 34.1% were non-families, and 29.4% of all households were made up of individuals.The average household size was 2.38 and the average family size was 2.92.