 1.28% of the population were Hispanic or Latino of any race.41.4% were of German, 23.8% Dutch and 16.5% Norwegian ancestry.There were 3,843 households out of which 31.30% had children under the age of 18 living with them, 62.10% were married couples living together, 5.50% had a female householder with no husband present, and 29.60% were non-families.