 Those of Hispanic or Latino origin made up 13.7% of the population.In terms of ancestry, 20.2% were German, 14.5% were English, 10.8% were Irish, and 7.0% were American.Of the 28,760 households, 35.4% had children under the age of 18 living with them, 54.1% were married couples living together, 10.5% had a female householder with no husband present, 30.6% were non-families, and 24.3% of all households were made up of individuals.