It happened around 10:30 Saturday morning as a man who appeared to be shopping pulled a gun and robbed the Chevron gas station at 2700 Centerville Road.
The robber approached the counter where the clerk was and demanded money.
LT Ken Bergstrom of the Tallahassee Police Department said, "He took a hand gun out and started waiving it in a threatening manner. The clerk took the money out of the register and gave it to the suspect and he fled the scene on foot and he is currently at large."
The suspect is described as approximately six feet tall and 180 pounds, wearing a white baseball cap and shirt, with dark shorts.
If you have any information on this crime you can contact Crime Stoppers at 891-HELP.