 The average household size was 2.53 and the average family size was 3.02.The county population contained 25.50% under the age of 18, 7.70% from 18 to 24, 27.90% from 25 to 44, 23.90% from 45 to 64, and 15.00% who were 65 years of age or older.The median age was 38 years.