 Those of Hispanic or Latino origin made up 2.3% of the population.In terms of ancestry, 24.9% were German, 12.8% were Irish, 9.7% were American, and 8.8% were English.Of the 223,943 households, 29.7% had children under the age of 18 living with them, 41.6% were married couples living together, 15.3% had a female householder with no husband present, 38.4% were non-families, and 32.2% of all households were made up of individuals.