 The average household size was 2.91 and the average family size was 3.30.In the county, the population was spread out with 29.00% under the age of 18, 8.40% from 18 to 24, 28.70% from 25 to 44, 21.50% from 45 to 64, and 12.40% who were 65 years of age or older.The median age was 34 years.