 Of the 8,613 households, 36.30% had children under the age of 18 living with them, 67.20% were married couples living together, 7.90% had a female householder with no husband present, and 22.30% were not families.About 19.20% of all households were made up of individuals, and 8.40% had someone living alone who was 65 years of age or older.The average household size was 2.70 and the average family size was 3.09.