 20.4% of residents were under the age of 18; 6.8% were between the ages of 18 and 24; 24% were from 25 to 44; 27% were from 45 to 64; and 21.7% were 65 years of age or older.The gender makeup of the city was 48.4% male and 51.6% female.As of the census of 2000, there were 12,750 people, 5,604 households, 3,754 families living in the city.