The robbery happened at 2:35 a.m. on July 12th at the Exxon station at 400 Pulaski Highway.
Police say the suspect confronted an employee with a handgun and demanded money.
The employee complied and the suspect fled on foot with an undisclosed amount of cash.
The gas station worker was not hurt.
The suspect seen in the surveillance pictures is described as a black male, 18 to 25 years old standing 5'8" to 5'9" tall and weighing 170 pounds. He was wearing a black shirt and blue shorts.
Anyone with information is asked to contact the Robbery Unit at Troop 2 at 302-834-2630 Extension #6 or Delaware Crime Stoppers at 1-800-TIP-3333. Tips can also be provided online at tipsubmit.com or by text message at 274637 (CRIMES) using the keyword "DSP."