 Those of Hispanic or Latino origin made up 2.1% of the population.In terms of ancestry, 31.2% were American, 21.7% were German, 15.8% were English, and 12.3% were Irish.Of the 6,811 households, 30.1% had children under the age of 18 living with them, 53.0% were married couples living together, 10.0% had a female householder with no husband present, 32.2% were non-families, and 27.5% of all households were made up of individuals.