 The average household size was 2.65 and the average family size was 3.17.The county population contained 25.60% under the age of 18, 9.20% from 18 to 24, 32.20% from 25 to 44, 22.30% from 45 to 64, and 10.70% who were over age 64.The median age was 34 years.