 There were 21,581 households of which 44.90% had children under the age of 18 living with them, 66.20% were married couples living together, 7.50% had a female householder with no husband present, and 22.40% were non-families.15.70% of all households were made up of individuals and 5.20% had someone living alone who was 65 years of age or older.The average household size was 2.91 and the average family size was 3.27.