sentences:  Of the 6,376 households, 30.7% had children under the age of 18 living with them, 57.1% were married couples living together, 9.6% had a female householder with no husband present, 29.2% were non-families, and 25.4% of all households were made up of individuals.The average household size was 2.47 and the average family size was 2.93.The median age was 42.6 years.