 There were 15,629 households, out of which 23.5% had children under the age of 18 living with them, 55.7% were married couples living together, 8.8% had a female householder with no husband present, and 32.6% were non-families.27.1% of all households were made up of individuals, and 15.3% had someone living alone who was 65 years of age or older.The average household size was 2.27 and the average family size was 2.75.