sentences:  In terms of ancestry, 27.5% were German, 11.1% were Irish, 7.4% were English, and 4.6% were American.Of the 105,045 households, 34.7% had children under the age of 18 living with them, 44.6% were married couples living together, 17.7% had a female householder with no husband present, 32.7% were non-families, and 27.5% of all households were made up of individuals.The average household size was 2.53 and the average family size was 3.09.