 In terms of ancestry, 43.3% were German, 11.8% were American, 11.2% were Irish, and 8.6% were English.Of the 9,091 households, 32.1% had children under the age of 18 living with them, 53.2% were married couples living together, 10.2% had a female householder with no husband present, 31.4% were non-families, and 26.5% of all households were made up of individuals.The average household size was 2.46 and the average family size was 2.95.