 The average household size was 2.86 and the average family size was 3.29.In the county, the population was spread out with 27.70% under the age of 18, 13.80% from 18 to 24, 27.20% from 25 to 44, 20.50% from 45 to 64, and 10.80% who were 65 years of age or older.The median age was 31 years.