sentences:  There were 21,476 households out of which 46.00% had children under the age of 18 living with them, 47.70% were married couples living together, 22.70% had a female householder with no husband present, and 22.30% were non-families.19.50% of all households were made up of individuals and 5.30% had someone living alone who was 65 years of age or older.The average household size was 3.44 and the average family size was 3.99.