sentences:  Those of Hispanic or Latino origin made up 2.1% of the population.In terms of ancestry, 31.3% were German, 18.1% were American, 10.1% were English, and 10.0% were Irish.Of the 12,777 households, 29.9% had children under the age of 18 living with them, 54.4% were married couples living together, 9.5% had a female householder with no husband present, 31.7% were non-families, and 27.3% of all households were made up of individuals.