 In the city, the population was spread out, with 21.9% under the age of 18, 13.5% from 18 to 24, 46.5% from 25 to 44, 15.0% from 45 to 64, and 3.3% who were 65 years of age or older.The median age was 31 years.For every 100 females, there were 289.7 males.