 The average household size was 2.68 and the average family size was 3.09.In the county, the population was distributed as 27.8% under the age of 18, 8.5% from 18 to 24, 28.3% from 25 to 44, 23.2% from 45 to 64, and 12.2% who were 65 years of age or older.The median age was 36 years.