sentences:  In terms of ancestry, 24.3% were German, 15.0% were Irish, 13.0% were American, and 9.8% were English.Of the 44,248 households, 32.6% had children under the age of 18 living with them, 48.4% were married couples living together, 12.9% had a female householder with no husband present, 33.4% were non-families, and 27.6% of all households were made up of individuals.The average household size was 2.46 and the average family size was 2.98.