 0.90% of the population were Hispanic or Latino of any race.44.8% were of German, 20.8% Norwegian and 5.4% Irish ancestry.There were 3,751 households out of which 28.60% had children under the age of 18 living with them, 55.40% were married couples living together, 5.10% had a female householder with no husband present, and 36.90% were non-families.