 36.5% were of Norwegian and 34.6% German ancestry.There were 4,439 households out of which 30.30% had children under the age of 18 living with them, 58.60% were married couples living together, 5.70% had a female householder with no husband present, and 33.00% were non-families.29.30% of all households were made up of individuals and 15.20% had someone living alone who was 65 years of age or older.