| 11 | D | BayComm Techs | BayComm Technicians | Business |
| 100 | D | DelCityRefinery | Delaware City Refinery | Business |
| 200 | D | DelCityRefFire | Delaware City Refinery Fire Suppresion | Business |
| 1151 | D | OilRefinery 1151 | Oil tanker vessels and refinery | Business |
| 3201 | D | DelCityRefSec | Delaware City Refinery Security | Security |
| 17000 | D | Bear Materials | Bear Materials (Concrete) | Business |
| 17001 | D | ColonialApt P | Colonial Airport Park and Ride Shuttle Bus | Transportation |
| 17002 | D | Greggo Ferrara | Greggo and Ferrara Construction | Business |
| 21002 | D | Payless A/p Shtl | Payless Airport Shuttle | Business |
| 21101 | D | A-1 Sanitation | A-1 Sanitation Service Inc (Septic/Grease Traps) | Business |
| 22000 | D | DelawareElec | Delaware Electric Cooperative | Utilities |
| 23000 | D | Harris Towing | Harris Towing Group | Business |
| 27000 | D | Taxi 27000 | Taxi (Lewes, Rehoboth and Dewey area) | Transportation |
