sentences:  Of the 9,219 households, 23.3% had children under the age of 18 living with them, 49.5% were married couples living together, 9.8% had a female householder with no husband present, 36.4% were non-families, and 30.5% of all households were made up of individuals.The average household size was 2.21 and the average family size was 2.72.The median age was 49.4 years.