There were 22,260 households, of which 24.3% had children under the age of 18 living with them, 37.3% were married couples living together, 9.7% had a female householder with no husband present, 3.7% had a male householder with no wife present, and 49.3% were non-families. 34.8% of all households were made up of individuals, and 8.6% had someone living alone who was 65 years of age or older. The average household size was 2.21 and the average family size was 2.87.