 The average household size was 2.73 and the average family size was 3.21.In the city, the population was spread out with 28.2% under the age of 18, 14.2% from 18 to 24, 28.2% from 25 to 44, 20.5% from 45 to 64, and 8.9% who were 65 years of age or older.The median age was 29 years.