 3.39% of the population were Hispanic or Latino of any race.21.4% were of German, 12.9% American, 12.7% English, 9.9% Irish and 6.4% Norwegian ancestry.There were 3,707 households out of which 34.10% had children under the age of 18 living with them, 61.40% were married couples living together, 7.50% had a female householder with no husband present, and 27.20% were non-families.