 The average household size was 2.09 and the average family size was 2.81.In the city, the population was spread out, with 17.8% under the age of 18, 23.8% from 18 to 24, 27.2% from 25 to 44, 18.4% from 45 to 64, and 12.8% who were 65 years of age or older.The median age was 30 years.