sentences:  In terms of ancestry, 6.3% were German, 5.3% were English, and 1.6% were American.Of the 11,978 households, 28.8% had children under the age of 18 living with them, 38.6% were married couples living together, 14.9% had a female householder with no husband present, 39.3% were non-families, and 32.5% of all households were made up of individuals.The average household size was 2.34 and the average family size was 2.95.