| Post Office Name | US Post Office |
| Address | 12 Railroad Ave |
| City | Clayton |
| State | Delaware |
| Phone Number | (302) 653-7376 |
| Latitude | 39.2549 |
| Longitude | -75.6976 |
19938 US Post Office in Clayton, Delaware is located at 12 Railroad Ave. The Clayton Post Office Number is (302) 653-7376
