sentences:  In 2000, of the 11,373 households, 41.40% had children under the age of 18 living with them, 52.70% were married couples living together, 18.20% had a female householder with no husband present, and 23.10% were not families.About 19.00% of all households were made up of individuals, and 5.80% had someone living alone who was 65 years of age or older.The average household size was 2.86 and the average family size was 3.22.