 There were 12,868 households, of which 33.5% had children under the age of 18 living with them, 40.0% were married couples living together, 17.1% had a female householder with no husband present, 6.4% had a male householder with no wife present, and 36.5% were non-families.30.4% of all households were made up of individuals, and 12.7% had someone living alone who was 65 years of age or older.The average household size was 2.45 and the average family size was 3.00.