 The average household size was 2.28 and the average family size was 2.76.The county population contained 20.90% under the age of 18, 5.50% from 18 to 24, 21.60% from 25 to 44, 29.10% from 45 to 64, and 23.00% who were 65 years of age or older.The median age was 46 years.