sentences:  The average household size was 2.33 persons and the average family size was 2.78 persons.In the county, the population was spread out with 20.80% under the age of 18, 6.30% from 18 to 24, 25.9% from 25 to 44, 26.7% from 45 to 64, and 22.5% who were 65 years of age or older.The median age was 46 years.