 There were 17,789 households out of which 29.20% had children under the age of 18 living with them, 58.30% were married couples living together, 7.60% had a female householder with no husband present, and 30.40% were non-families.26.00% of all households were made up of individuals and 12.20% had someone living alone who was 65 years of age or older.The average household size was 2.43 and the average family size was 2.91.