 The average household size was 2.76 and the average family size was 3.11.In the city, the population was spread out with 28.5% under the age of 18, 10.5% from 18 to 24, 32.8% from 25 to 44, 19.8% from 45 to 64, and 8.4% who were 65 years of age or older.The median age was 31 years.