 1.74% of the population were Hispanic or Latino of any race.33.6% were of German, 12.1% English, 9.5% Norwegian and 7.0% Irish ancestry.There were 3,127 households out of which 23.70% had children under the age of 18 living with them, 50.90% were married couples living together, 8.50% had a female householder with no husband present, and 36.80% were non-families.