 29.5% were of German, 23.4% American, 12.3% English and 11.0% Irish ancestry according to Census 2000.There were 25,137 households out of which 30.90% had children under the age of 18 living with them, 57.90% were married couples living together, 9.10% had a female householder with no husband present, and 29.70% were non-families.25.40% of all households were made up of individuals and 11.20% had someone living alone who was 65 years of age or older.