| Locality | Post Code |
|---|---|
| Petersville, Westmoreland | JM00000 |
| Porters Mountain, Westmoreland | JM00000 |
| Red Hills, Westmoreland | JM00000 |
| Revival, Westmoreland | JM00000 |
| Roaring River, Westmoreland | JM00000 |
| Russia, Westmoreland | JM00000 |
| Saint Leonards, Westmoreland | JMDWD16 |
| Savanna-La-Mar, Westmoreland | JMDWD17 |
| Savannah-la-mar Business Dist., Westmoreland | JM00000 |
| Seaford Town, Westmoreland | JM00000 |
| Shefield, Westmoreland | JMDWD18 |
| Shoalin Grotto, Westmoreland | JM00000 |
| Smithfield, Westmoreland | JM00000 |
| St. Leonards, Westmoreland | JM00000 |
| Strathbogie, Westmoreland | JM00000 |
| Strawberry, Westmoreland | JM00000 |
| Struie, Westmoreland | JM00000 |
| Three Mile River, Westmoreland | JM00000 |
| Town Head, Westmoreland | JM00000 |
| Truro, Westmoreland | JM00000 |
| Water Works, Westmoreland | JM00000 |
| White House, Westmoreland | JMDWD19 |
| Whithorn, Westmoreland | JM00000 |
| Williamsfield, Westmoreland | JM00000 |