 23.20% of all households were made up of individuals and 9.90% had someone living alone who was 65 years of age or older.The average household size was 2.42 and the average family size was 2.83.The county population contained 23.90% under the age of 18, 4.60% from 18 to 24, 22.60% from 25 to 44, 32.70% from 45 to 64, and 16.10% who were 65 years of age or older.