 There were 55,384 households, of which 39.80% had children under the age of 18 living with them, 68.50% were married couples living together, 6.80% had a female householder with no husband present, and 21.40% were non-families.17.10% of all households were made up of individuals and 5.40% had someone living alone who was 65 years of age or older.The average household size was 2.80 and the average family size was 3.18.