sentences:  In terms of ancestry, 32.8% were German, 14.3% were Irish, 10.6% were English, 8.1% were American, and 6.3% were Polish.Of the 8,335 households, 30.4% had children under the age of 18 living with them, 51.5% were married couples living together, 11.3% had a female householder with no husband present, 32.5% were non-families, and 28.6% of all households were made up of individuals.The average household size was 2.38 and the average family size was 2.90.