 There were 18,312 households out of which 27.1% had children under the age of 18 living with them, 44.8% were married couples living together, 4.3% had a male householder with no wife present, 9.5% had a female householder with no husband present, and 41.4% were non-families.34.7% of all households were made up of individuals, and 12.4% 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 2.93.