As of the census[REF] of 2000, there were 20,645 people, 7,233 households, and 5,070 families residing in the city.
In the city, the population was spread out with 32.9% under the age of 18, 14.6% from 18 to 24, 25.2% from 25 to 44, 16.3% from 45 to 64, and 10.9% who were 65 years of age or older.