There were 16,744 households, of which 35.1% had children under the age of 18 living with them, 48.3% were married couples living together, 12.2% had a female householder with no husband present, 5.2% had a male householder with no wife present, and 34.2% were non-families. 26.6% of all households were made up of individuals, and 10.9% had someone living alone who was 65 years of age or older. The average household size was 2.58 and the average family size was 3.13.