sentences:  There were 7,818 households, out of which 13.5% had children under the age of 18 living with them, 72.4% were married couples living together, 3.2% had a female householder with no husband present, and 23.2% were non-families.20.5% of all households were made up of individuals, and 13.3% had someone living alone who was 65 years of age or older.The average household size was 2.10 and the average family size was 2.38.