There were 8,321 households, of which 18.6% had children under the age of 18 living with them, 33.3% were married couples living together, 9.0% had a female householder with no husband present, 3.3% had a male householder with no wife present, and 54.5% were non-families. 38.2% of all households were made up of individuals, and 11.8% had someone living alone who was 65 years of age or older. The average household size was 2.05 and the average family size was 2.71.