As of 2010, there were 38,955 households, out of which 12.6% were vacant. As of 2000, 24.0% had children under the age of 18 living with them, 44.0% were married couples living together, 11.5% had a female householder with no husband present, and 40.7% were non-families. 32.9% of all households were made up of individuals, and 13.3% had someone living alone who was 65 years of age or older. The average household size was 2.22 and the average family size was 2.82.