There were 6,476 households, of which 33.1% had children under the age of 18 living with them, 39.9% were married couples living together, 15.0% had a female householder with no spouse present, 7.1% had a male householder with no spouse present, and 37.9% were non-families. 29.2% of all households were made up of individuals, and 10.8% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 3.10.