There were 11,288 households, of which 18.9% had children under the age of 18 living with them, 30.7% were married couples living together, 7.5% had a female householder with no husband present, 3.2% had a male householder with no wife present, and 58.6% were non-families. 35.8% of all households were made up of individuals, and 7.2% had someone living alone who was 65 years of age or older. The average household size was 2.16 and the average family size was 2.82.