 There were 21,590 households out of which 30.9% had children under the age of 18 living with them, 56.5% were husband and wife families, 9.9% had a female householder with no husband present, 28.6% were non-families, and 24.0% were made up of individuals.The average household size was 2.52 and the average family size was 2.97.In the county, the population was spread out with 23.5% under age of 18, 7.9% from 18 to 24, 23.0% from 25 to 44, 29.8% from 45 to 64, and 15.8% who were 65 years of age or older.