 The average household size was 2.74 and the average family size was 3.37.The county population contained 32.00% under the age of 18, 7.10% from 18 to 24, 23.20% from 25 to 44, 20.40% from 45 to 64, and 17.30% who were 65 years of age or older.The median age was 36 years.