 20.4% of residents were under the age of 18; 5.7% were between the ages of 18 and 24; 17.8% were from 25 to 44; 35% were from 45 to 64; and 21.2% were 65 years of age or older.The gender makeup of the city was 48.8% male and 51.2% female.As of the census of 2000, there were 6,392 people, 2,609 households, and 1,933 families living in the city.