As of the 2000 United States Census,[REF] there were 20,336 people, 7,967 households, and 5,736 families residing in the county.
In the county, the population was spread out with 25.40% under the age of 18, 8.30% from 18 to 24, 26.70% from 25 to 44, 23.50% from 45 to 64, and 16.10% who were 65 years of age or older.