According to our records, this business is located at 600 Kirkwood Hwy in Wilmington (in New Castle County), Delaware 19805, the location GPS coordinates are: 39.738434 (latitude), -75.592707 (longitude). Diamond State Restaurant is categorized under Drive-In Restaurants (SIC code 5812). Known organization president is Sezai Isik. Current estimates show that the unit has a sales volume of $380,000 and staff of approximately 16 people. You can contact the company by phone at (302) 636-0778; the following fax number is also provided: (302) 636-0779.