 Those of Hispanic or Latino origin made up 2.6% of the population.In terms of ancestry, 39.8% were German, 16.6% were Irish, 15.0% were English, and 3.0% were American.Of the 6,834 households, 24.4% had children under the age of 18 living with them, 55.7% were married couples living together, 6.6% had a female householder with no husband present, 33.6% were non-families, and 28.6% of all households were made up of individuals.