 In the county, the population was distributed as 28.70% under the age of 18, 11.20% from 18 to 24, 30.80% from 25 to 44, 18.70% from 45 to 64, and 10.60% who were 65 years of age or older.The median age was 31 years.For every 100 females, there were 121.40 males.