 In the county, the population was spread out, with 25.4% under the age of 18, 14.9% from 18 to 24, 28.5% from 25 to 44, 21.5% from 45 to 64, and 9.7% who were 65 years of age or older.The median age was 30.7 years.For every 100 females, there were 99.9 males.