 The average household size was 2.36 and the average family size was 2.78.The county population contained 21.10% under the age of 18, 6.30% from 19 to 24, 3.9% from 25 to 44, 31.1% from 45 to 64, and 22.2% who were 65 years of age or older.The median age was 47 years.