sentences:  In terms of ancestry, 25.7% were American, 25.1% were German, 15.8% were Irish, and 11.4% were English.Of the 5,186 households, 29.6% had children under the age of 18 living with them, 57.3% were married couples living together, 8.5% had a female householder with no husband present, 29.7% were non-families, and 25.5% of all households were made up of individuals.The average household size was 2.44 and the average family size was 2.90.