 0.56% of the population were Hispanic or Latino of any race.21.2% were of Norwegian, 19.8% German, 12.3% Swedish and 7.0% Irish ancestry.There were 6,040 households out of which 28.40% had children under the age of 18 living with them, 53.30% were married couples living together, 8.50% had a female householder with no husband present, and 34.40% were non-families.