There were 12,819 households, of which 32.7% had children under the age of 18 living with them, 47.9% were married couples living together, 14.0% had a female householder with no husband present, 4.2% had a male householder with no wife present, and 33.9% were non-families. 27.7% of all households were made up of individuals, and 9.5% had someone living alone who was 65 years of age or older. The average household size was 2.41 and the average family size was 2.94.