| Locality | Post Code |
|---|---|
| Nicholville, Saint Lawrence | 12965 |
| Norfolk, Saint Lawrence | 13667 |
| North Lawrence, Saint Lawrence | 12967 |
| North Russell, Saint Lawrence | 13617 |
| North Stockholm, Saint Lawrence | 13668 |
| Norwood, Saint Lawrence | 13668 |
| Ogdensburg, Saint Lawrence | 13669 |
| Oswegatchie, Saint Lawrence | 13670 |
| Parishville, Saint Lawrence | 13672 |
| Piercefield, Saint Lawrence | 12973 |
| Pierces Corner, Saint Lawrence | 13642 |
| Pierrepont, Saint Lawrence | 13617 |
| Pope Mills, Saint Lawrence | 13654 |
| Potsdam, Saint Lawrence | 13676, 13699 |
| Pyrites, Saint Lawrence | 13677 |
| Raymondville, Saint Lawrence | 13678 |
| Red Mills, Saint Lawrence | 13669 |
| Rensselaer Falls, Saint Lawrence | 13680 |
| Richville, Saint Lawrence | 13681 |
| Rooseveltown, Saint Lawrence | 13683 |
| Rossie, Saint Lawrence | 13646 |
| Ruby Corner, Saint Lawrence | 13646 |
| Russell, Saint Lawrence | 13684 |
| Sandfordville, Saint Lawrence | 13676 |
| Sissonville, Saint Lawrence | 13676 |
| Slab City, Saint Lawrence | 13676 |