sentences:  Of the 7,900 households, 32.1% had children under the age of 18 living with them, 59.5% were married couples living together, 7.3% had a female householder with no husband present, 28.1% were non-families, and 24.0% of all households were made up of individuals.The average household size was 2.54 and the average family size was 2.98.The median age was 40.9 years.