 22.10% of all households were made up of individuals and 8.90% had someone living alone who was 65 years of age or older.The average household size was 3.15 and the average family size was 3.66.The county population contained 38.90% under the age of 18, 9.00% from 18 to 24, 27.20% from 25 to 44, 16.60% from 45 to 64, and 8.30% who were 65 years of age or older.