 The average household size was 2.15 and the average family size was 2.81.In the city, the population was distributed with 20.5% under the age of 18, 5.2% from 18 to 24, 34.6% from 25 to 44, 31.2% from 45 to 64, and 8.5% who were 65 years of age or older.The median age was 40 years old.