 The average household size was 2.20 and the average family size was 2.91.In the city, the population was spread out, with 21.2% under the age of 18, 13.2% from 18 to 24, 28.0% from 25 to 44, 20.9% from 45 to 64, and 16.7% who were 65 years of age or older.The median age was 36 years.