There were 6,447 households, of which 21.4% had children under the age of 18 living with them, 48.2% were married couples living together, 8.4% had a female householder with no husband present, 2.8% had a male householder with no wife present, and 40.7% were non-families. 35.5% of all households were made up of individuals, and 17.3% had someone living alone who was 65 years of age or older. The average household size was 2.15 and the average family size was 2.80.