sentences:  In terms of ancestry, 26.1% were German, 21.9% were American, 15.2% were English, and 13.4% were Irish.Of the 6,782 households, 32.0% had children under the age of 18 living with them, 59.4% were married couples living together, 8.0% had a female householder with no husband present, 28.9% were non-families, and 24.5% of all households were made up of individuals.The average household size was 2.46 and the average family size was 2.92.