The suspect displayed a handgun and demanded cash from an employee at the store at 150 East Ogden Avenue at about 5:15 p.m., police said. He fled the scene on foot with an undetermined amount of money.
Police describe the suspect as approximately 30 years old, black hair, unshaven and wearing a black coat over a light blue hooded sweatshirt, and green woodland camo pants.
Anyone with information is asked to contact the Hinsdale Police Department at 630-789-7070.