 The average household size was 2.77 and the average family size was 3.12.In the county, the population was spread out with 33.70% under the age of 18, 3.70% from 18 to 24, 29.50% from 25 to 44, 22.80% from 45 to 64, and 10.40% who were 65 years of age or older.The median age was 37 years.