There were 15,154 households, of which 52.9% had children under the age of 18 living with them, 76.9% were married couples living together, 5.6% had a female householder with no husband present, 2.7% had a male householder with no wife present, and 14.8% were non-families. 11.4% of all households were made up of individuals, and 2.1% had someone living alone who was 65 years of age or older. The average household size was 3.01 and the average family size was 3.28.