 Those of Hispanic or Latino origin made up 5.5% of the population.In terms of ancestry, 65.6% were German, 7.8% were Irish, 7.3% were American, 4.7% were English, 2.4% were French, 1.8% were Swiss, 1.7% were Dutch, 1.6% were Italian, 1.4% were Scottish, 1.0% were Welsh, 0.8% were Hungarian and 0.8% were Polish.Of the 12,872 households, 35.0% had children under the age of 18 living with them, 62.9% were married couples living together, 7.4% had a female householder with no husband present, 25.8% were non-families, and 22.5% of all households were made up of individuals.