 The average household size was 3.83 and the average family size was 4.23.The county population contains 41.30% under the age of 18, 11.00% from 18 to 24, 25.00% from 25 to 44, 16.10% from 45 to 64, and 6.50% who were 65 years of age or older.The median age was 23 years.