sentences:  In terms of ancestry, 33.8% were German, 15.6% were American, 11.1% were English, and 10.3% were Irish.Of the 6,079 households, 28.9% had children under the age of 18 living with them, 52.1% were married couples living together, 10.3% had a female householder with no husband present, 33.2% were non-families, and 28.4% of all households were made up of individuals.The average household size was 2.38 and the average family size was 2.87.