There were 4,160 households, of which 47.0% had children under the age of 18 living with them, 57.0% were married couples living together, 15.1% had a female householder with no husband present, 6.3% had a male householder with no wife present, and 21.7% were non-families. 17.1% of all households were made up of individuals, and 6.4% had someone living alone who was 65 years of age or older. The average household size was 2.85 and the average family size was 3.18.