 34.2% of all households were made up of individuals and 15.0% had someone living alone who was 65 years of age or older.The average household size was 2.12 and the average family size was 2.71.The county population contained 17.9% under the age of 18, 5.2% from 18 to 24, 20.0% from 25 to 44, 36.0% from 45 to 64, and 24.1% who were 65 years of age or older.