As of 2010, there were 33,920 households, out of which 19.5% were vacant. As of 2000, 18.0% had children under the age of 18 living with them, 30.1% were married couples living together, 14.5% had a female householder with no husband present, and 51.6% were non-families. Of all households, 39.4% were made up of individuals, and 14.4% had someone living alone who was 65 years of age or older. The average household size was 2.06 and the average family size was 2.77.