 In terms of ancestry, 36.5% were German, 14.1% were Irish, 12.2% were American, and 10.1% were English.Of the 11,956 households, 30.2% had children under the age of 18 living with them, 54.7% were married couples living together, 9.3% had a female householder with no husband present, 31.6% were non-families, and 27.2% of all households were made up of individuals.The average household size was 2.45 and the average family size was 2.95.