There were 15,575 households, of which 29.9% had children under the age of 18 living with them, 35.4% were married couples living together, 18.2% had a female householder with no husband present, 5.2% had a male householder with no wife present, and 41.1% were non-families. 33.7% of all households were made up of individuals, and 11.1% had someone living alone who was 65 years of age or older. The average household size was 2.27 and the average family size was 2.89.