 The average household size was 2.97 and the average family size was 3.40.In the county, the population was distributed as 31.10% under the age of 18, 10.00% from 18 to 24, 28.20% from 25 to 44, 20.20% from 45 to 64, and 10.50% who were 65 years of age or older.The median age was 32 years.