 Of the 8,517 households, 36.9% had children under the age of 18 living with them, 44.2% were married couples living together, 18.6% had a female householder with no husband present, 30.2% were non-families, and 24.8% of all households were made up of individuals.The average household size was 2.73 and the average family size was 3.23.The median age was 34.6 years.