 The average household size was 2.08 and the average family size was 2.78.In the city, the population was spread out, with 15.5% under the age of 18, 28.1% from 18 to 24, 19.2% from 25 to 44, 19.8% from 45 to 64, and 17.4% who were 65 years of age or older.The median age was 31 years.