 There were 10,174 households out of which 30.4% had children under the age of 18 living with them, 56.6% were husband and wife families, 9.5% had a female householder with no husband present, 28.8% were non-families, and 24.6% were made up of individuals.The average household size was 2.58 and the average family size was 3.04.The county population contained 24.9% under age of 18, 7.5% from 18 to 24, 21.5% from 25 to 44, 29.0% from 45 to 64, and 17.0% who were 65 years of age or older.