sentences:  The average household size was 2.56 and the average family size was 3.00.In the county, the population was spread out with 25.5% under the age of 18, 7.5% from 18 to 24, 31.3% from 25 to 44, 23.3% from 45 to 64, and 12.4% who were 65 years of age or older.The median age was 36 years.