 Of the 36,965 households, 30.6% had children under the age of 18 living with them, 54.0% were married couples living together, 9.8% had a female householder with no husband present, 31.5% were non-families, and 26.6% of all households were made up of individuals.The average household size was 2.47 and the average family size was 2.97.The median age was 40.9 years.