 Of the 9,990 households, 31.5% had children under the age of 18 living with them, 49.2% were married couples living together, 15.3% had a female householder with no husband present, 30.5% were non-families, and 27.3% of all households were made up of individuals.The average household size was 2.45 and the average family size was 2.98.The median age was 41.6 years.