 The average household size was 2.69 and the average family size was 3.15.In the county, the population was spread out with 28.70% under the age of 18, 8.40% from 18 to 24, 30.80% from 25 to 44, 22.60% from 45 to 64, and 9.50% who were 65 years of age or older.The median age was 34 years.