 In terms of ancestry, 30.7% were German, 14.7% were Irish, 13.3% were English, and 12.1% were American.Of the 5,570 households, 30.9% had children under the age of 18 living with them, 53.0% were married couples living together, 9.4% had a female householder with no husband present, 32.2% were non-families, and 27.8% of all households were made up of individuals.The average household size was 2.44 and the average family size was 2.95.