 The average household size was 2.74 and the average family size was 3.20.In the city, the population was spread out with 31.2% under the age of 18, 5.4% from 18 to 24, 26.9% from 25 to 44, 26.9% from 45 to 64, and 9.7% who were 65 years of age or older.The median age was 38 years.