 24.6% were of Dutch, 18.3% German, 10.8% American, 10.0% English and 7.4% Irish ancestry.97.9% spoke English and 1.1% Spanish as their first language.There were 5,450 households out of which 34.00% had children under the age of 18 living with them, 62.80% were married couples living together, 7.40% had a female householder with no husband present, and 25.80% were non-families.