 The average household size was 2.31 and the average family size was 3.01.In the city, the population was spread out, with 23.4% under the age of 18, 5.1% from 18 to 24, 31.1% from 25 to 44, 28.1% from 45 to 64, and 12.2% who were 65 years of age or older.The median age was 40 years.