 34.8% were of Norwegian, 26.2% German and 5.8% Danish ancestry.There were 13,356 households out of which 29.10% had children under the age of 18 living with them, 56.50% were married couples living together, 7.50% had a female householder with no husband present, and 32.50% were non-families.28.20% of all households were made up of individuals and 14.00% had someone living alone who was 65 years of age or older.