 31.6% of all households were made up of individuals and 13% had someone living alone who was 65 years of age or older.The average household size was 2.28 and the average family size was 2.82.The county population contained 20.2% under the age of 18, 7% from 18 to 24, 25.7% from 25 to 44, 29.7% from 45 to 64, and 17.2% who were 65 years of age or older.