 The average household size was 2.53 and the average family size was 3.09.The county population contained 27.00% under the age of 18, 8.50% from 18 to 24, 32.20% from 25 to 44, 21.60% from 45 to 64, and 10.80% who were 65 years of age or older.The median age was 35 years.