 The average household size was 2.60 and the average family size was 3.12.In the county, the population was distributed as 26.70% under the age of 18, 8.70% from 18 to 24, 30.20% from 25 to 44, 23.30% from 45 to 64, and 11.10% who were 65 years of age or older.The median age was 36 years.