sentences:  The average household size was 2.57 and the average family size was 3.11.In the city, the population was spread out with 26.0% under the age of 18, 16.8% from 18 to 24, 27.8% from 25 to 44, 17.1% from 45 to 64, and 12.3% who were 65 years of age or older.The median age was 30 years.