sentences:  There were 12,690 households out of which 27.30% had children under the age of 18 living with them, 55.00% were married couples living together, 8.10% had a female householder with no husband present, and 33.40% were non-families.25.00% of all households were made up of individuals and 7.90% had someone living alone who was 65 years of age or older.The average household size was 2.34 and the average family size was 2.79.