Shots rang out at 12:09 p.m. along the 600 block of West 6th Street, near Windsor Street.
Arriving officers discovered the 19-year-old victim, who had been shot several times in the arm and hip.
The victim was last reported to be in stable condition.
Police are continuing to investigate. Anyone with information is asked to call the Wilmington Police Confidential Tip Line at 302-576-3990 or Crime Stoppers at 1-800-TIP-3333.