 27.1% of residents were under the age of 18; 9.1% were between the ages of 18 and 24; 26.3% were from 25 to 44; 24.7% were from 45 to 64; and 12.8% were 65 years of age or older.The gender makeup of the city was 48.4% male and 51.6% female.Bellefontaine is the center of the Bellefontaine Micropolitan Statistical Area, as defined by the U.S. Census Bureau.