The robbery happened at 5:18 p.m. on Saturday, August 24th, at 10901 Bustleton Avenue.
Police say the suspect approached the counter and demanded money, telling the worker he had a gun.
The employee handed over an undetermined amount of cash. The suspect then fled through the back door in an unknown direction.
The suspect is described by police as a white male, 30 to 40 years old standing 5'8" tall and weighing 200 pounds. He was wearing a white tank top over a red shirt and black shorts.
Anyone with information is asked to contact Philadelphia Police at 215-686-TIPS (8477), text a tip to PPD TIP (773847) or through PhillyPolice.com.