 The average household size was 2.51 and the average family size was 3.00.In the county, the population was distributed as 25.30% under the age of 18, 9.30% from 18 to 24, 27.60% from 25 to 44, 22.80% from 45 to 64, and 15.10% who were 65 years of age or older.The median age was 37 years.