 The average household size was 2.11 and the average family size was 2.69.The county population was 16.9% under the age of 18, 8.4% from 18 to 24, 22.2% from 25 to 44, 31.1% from 45 to 64, and 21.5% who were 65 years of age or older.The median age was 46.8 years.