 The average household size was 2.64 and the average family size was 3.15.The county population contained 28.00% under the age of 18, 8.00% from 18 to 24, 26.70% from 25 to 44, 21.70% from 45 to 64, and 15.60% who were 65 years of age or older.The median age was 37 years.