There were 10,877 households, of which 27.6% had children under the age of 18 living with them, 40.6% were married couples living together, 12.0% had a female householder with no husband present, 4.4% had a male householder with no wife present, and 43.0% were non-families. 31.9% 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 2.24 and the average family size was 2.84.