 22.6% of residents were under the age of 18; 8.1% were between the ages of 18 and 24; 22.7% were from 25 to 44; 28.9% were from 45 to 64; and 17.6% were 65 years of age or older.The gender makeup of the city was 48.1% male and 51.9% female.As of the census of 2000, there were 19,355 people, 7,708 households, and 5,318 families residing in the city.