 The average household size was 2.56 and the average family size was 2.98.In the county, the population was spread out with 20.80% under the age of 18, 4.70% from 18 to 24, 35.70% from 25 to 44, 26.90% from 45 to 64, and 11.90% who were 65 years of age or older.The median age was 40 years.