 The average household size was 2.75 and the average family size was 3.22.In the county, the population was spread out with 26.8% under the age of 18, 10.3% from 18 to 24, 30.7% from 25 to 44, 21.2% from 45 to 64, and 11.0% who were 65 years of age or older.The median age was 34 years.