sentences:  Of the 6,604 households 31.1% had children under the age of 18 living with them, 47.7% were married couples living together, 16.9% had a female householder with no husband present, and 29.0% were non-families.24.2% of households were one person and 8.7% had someone living alone who was 65 years of age or older.The average household size was 2.63 and the average family size was 3.09.