 The average household size was 2.51 and the average family size was 2.99.In the county, the population was spread out with 23.20% under the age of 18, 8.90% from 18 to 24, 28.60% from 25 to 44, 23.20% from 45 to 64, and 16.10% who were 65 years of age or older.The median age was 38 years.