 The average household size was 2.71 and the average family size was 3.09.In the county, the population was spread out, with 28.70% under the age of 18, 8.00% from 18 to 24, 30.90% from 25 to 44, 21.90% from 45 to 64, and 10.40% who were 65 years of age or older.The median age was 35 years.