 The average household size was 2.86 and the average family size was 3.21.In the county, the population was spread out with 28.70% under the age of 18, 7.60% from 18 to 24, 33.20% from 25 to 44, 22.70% from 45 to 64, and 7.80% who were 65 years of age or older.The median age was 35 years.