sentences:  Of the 47,602 households, 37.6% had children under the age of 18 living with them, 53.9% were married couples living together, 12.5% had a female householder with no husband present, 27.4% were non-families, and 22.0% of all households were made up of individuals.The average household size was 2.75 and the average family size was 3.22.The median age was 37.9 years.