As of 2010, there were 22,685 households, with 13.3% being vacant. In 2000, there were 12,938 households, out of which 69.7% were married couples, 47.2% had children under the age of 18 living with them, 9.7% had a female householder with no husband present, and 17.4% were non-families. 13.2% of all households were made up of individuals, and 4.0% 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.