 17.60% of all households were made up of individuals and 8.10% had someone living alone who was 65 years of age or older.The average household size was 3.10 and the average family size was 3.53.The county population contained 35.40% under the age of 18, 9.60% from 18 to 24, 24.10% from 25 to 44, 20.90% from 45 to 64, and 10.10% who were 65 years of age or older.