 The average household size was 2.55 and the average family size was 3.16.In the city, the population was spread out, with 21.6% under the age of 18, 6.8% from 18 to 24, 25.7% from 25 to 44, 31.1% from 45 to 64, and 14.9% who were 65 years of age or older.The median age was 42 years.