 22.20% of all households were made up of individuals and 9.00% had someone living alone who was 65 years of age or older.The average household size was 2.68 and the average family size was 3.13.The county population contained 29.10% under the age of 18, 7.40% from 18 to 24, 27.50% from 25 to 44, 23.20% from 45 to 64, and 12.80% who were 65 years of age or older.