John C Calhoun State Community College. College Address Post Office Box 2216 Decatur, AL 35609 Telephone (256) 306-2500 Website www.calhoun.edu Fafsa. Decatur Campus 6250 Hwy. 31 North, Tanner, AL 35671 Telephone: (256) 306-2500. Huntsville Campus 102 Wynn Dr NW, Huntsville, AL 35805 Telephone: (256) 890-4700 Calhoun is the largest of the two-year institutions making up the Alabama Community College System. The college has locations in Decatur and Huntsville. "This new…