sentences:  In terms of ancestry, 26.2% were German, 16.0% were Irish, 11.9% were English, and 11.6% were American.Of the 2,938 households, 34.4% had children under the age of 18 living with them, 56.0% were married couples living together, 11.7% had a female householder with no husband present, 27.9% were non-families, and 23.9% of all households were made up of individuals.The average household size was 2.54 and the average family size was 2.99.