 23.9% were of German, 10.2% Czech, 10.1% Dutch and 5.5% Norwegian ancestry.There were 3,343 households out of which 34.20% had children under the age of 18 living with them, 53.10% were married couples living together, 11.70% had a female householder with no husband present, and 30.40% were non-families.28.30% of all households were made up of individuals and 15.10% had someone living alone who was 65 years of age or older.