 Those of Hispanic or Latino origin made up 0.9% of the population.In terms of ancestry, 13.2% were American, 12.9% were German, 11.3% were English, and 10.6% were Irish.Of the 21,981 households, 33.6% had children under the age of 18 living with them, 59.6% were married couples living together, 9.5% had a female householder with no husband present, 26.4% were non-families, and 22.3% of all households were made up of individuals.