 There were 20,028 households out of which 35.40% had children under the age of 18 living with them, 64.20% were married couples living together, 8.90% had a female householder with no husband present, and 23.70% were non-families.20.60% of all households were made up of individuals and 7.90% had someone living alone who was 65 years of age or older.The average household size was 2.56 and the average family size was 2.96.