There were 9,278 households, of which 29.6% had children under the age of 18 living with them, 45.7% were married couples living together, 10.0% had a female householder with no husband present, 4.3% had a male householder with no wife present, and 40.0% were non-families. 33.0% of all households were made up of individuals, and 12.4% had someone living alone who was 65 years of age or older. The average household size was 2.28 and the average family size was 2.90.