 Those of Hispanic or Latino origin made up 6.6% of the population.In terms of ancestry, 34.6% were English, 11.5% were German, 11.0% were Danish, 8.0% were American, and 7.2% were Swedish.Of the 4,079 households, 44.1% had children under the age of 18 living with them, 70.6% were married couples living together, 6.3% had a female householder with no husband present, 20.1% were non-families, and 17.9% of all households were made up of individuals.