sentences:  Of the 75,793 households, 30.5% had children under the age of 18 living with them, 44.1% were married couples living together, 14.1% had a female householder with no husband present, 37.7% were non-families, and 31.0% of all households were made up of individuals.The average household size was 2.39 and the average family size was 3.00.The median age was 36.8 years.