 1.92% of the population were Hispanic or Latino of any race.37.8% were of Norwegian and 36.8% German ancestry.There were 5,361 households, out of which 31.20% had children under the age of 18 living with them, 57.00% were married couples living together, 6.60% had a female householder with no husband present, and 32.90% were non-families.