 16.00% of all households were made up of individuals and 7.40% had someone living alone who was 65 years of age or older.The average household size was 3.22 and the average family size was 3.63.The county population contained 36.10% under the age of 18, 10.50% from 18 to 24, 25.40% from 25 to 44, 17.70% from 45 to 64, and 10.40% who were 65 years of age or older.