 Those of Hispanic or Latino origin made up 16.5% of the population.In terms of ancestry, 23.3% were Irish, 17.1% were Italian, 12.6% were English, 6.1% were German, and 3.6% were American.Of the 285,956 households, 32.9% had children under the age of 18 living with them, 47.9% were married couples living together, 13.5% had a female householder with no husband present, 34.3% were non-families, and 28.1% of all households were made up of individuals.