There were 22,594 households, of which 42.3% had children under the age of 18 living with them, 61.8% were married couples living together, 8.7% had a female householder with no husband present, 3.3% had a male householder with no wife present, and 26.1% were non-families. 20.4% of all households were made up of individuals, and 5.7% had someone living alone who was 65 years of age or older. The average household size was 2.73 and the average family size was 3.20.