There were 5,171 households, of which 40.5% had children under the age of 18 living with them, 71.3% were married couples living together, 6.2% had a female householder with no husband present, 4.2% had a male householder with no wife present, and 18.2% were non-families. 13.5% of all households were made up of individuals, and 4.4% had someone living alone who was 65 years of age or older. The average household size was 2.95 and the average family size was 3.25.