 The average household size was 2.06 and the average family size was 2.61.The county population contained 15.8% under the age of 18, 4.1% from 18 to 24, 16.7% from 25 to 44, 37.0% from 45 to 64, and 26.3% who were 65 years of age or older.The median age was 52.7 years.