There were 11,840 households, of which 34.4% had children under the age of 18 living with them, 46.8% were married couples living together, 15.3% had a female householder with no husband present, 3.1% had a male householder with no wife present, and 34.8% were non-families. 31.1% of all households were made up of individuals, and 12.6% had someone living alone who was 65 years of age or older. The average household size was 2.39 and the average family size was 3.03.