There were 19,007 households, of which 27.0% had children under the age of 18 living with them, 45.1% were married couples living together, 2.0% had a male householder with no wife present, 9.9% had a female householder with no husband present, and 43.0% were non-families. 35.1% of all households were made up of individuals, and 11.2% had someone living alone who was 65 years of age or older. The average household size was 2.23 and the average family size was 2.93.