 22.1% of all households were made up of individuals and 10.0% had someone living alone who was 65 years of age or older.The average household size was 3.29 and the average family size was 3.82.The county population contained 36.9% under the age of 18, 9.8% from 18 to 24, 24.3% from 25 to 44, 18.5% from 45 to 64, and 10.5% who were 65 years of age or older.