There were 13,253 households, of which 35.9% had children under the age of 18 living with them, 48.7% were married couples living together, 11.7% had a female householder with no husband present, 4.4% had a male householder with no wife present, and 35.3% were non-families. 28.4% of all households were made up of individuals, and 9.4% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 3.04.