There were 8,698 households, of which 23.3% had children under the age of 18 living with them, 41.7% were married couples living together, 8.2% had a female householder with no husband present, 3.4% had a male householder with no wife present, and 46.7% were non-families. 33.2% of all households were made up of individuals, and 10% had someone living alone who was 65 years of age or older. The average household size was 2.25, and the average family size was 2.89.