 The average household size was 2.67 and the average family size was 3.14.The county population contained 23.5% under the age of 18, 6.2% from 18 to 24, 32.90% from 25 to 44, 28.7% from 45 to 64, and 10.3% who were 65 years of age or older.The median age was 38 years.