 Those of Hispanic or Latino origin made up 1.6% of the population.In terms of ancestry, 54.3% were German, 22.6% were Norwegian, 9.6% were Irish, 6.7% were English, and 3.3% were American.Of the 11,432 households, 30.7% had children under the age of 18 living with them, 49.9% were married couples living together, 9.0% had a female householder with no husband present, 36.9% were non-families, and 30.6% of all households were made up of individuals.