As a box code, 3624 is used for 15 post office box locations.
PO Boxes using 3624
| Suburb | Town | Province |
|---|---|---|
| Assagay | Hillcrest | KwaZulu-Natal |
| Assegai | Hillcrest | KwaZulu-Natal |
| Peacevale | Hillcrest | KwaZulu-Natal |
| Circle Gardens | Pinetown | KwaZulu-Natal |
| Forest Hills | Pinetown | KwaZulu-Natal |
| Hillview Gardens | Pinetown | KwaZulu-Natal |
| Kloofview Road | Pinetown | KwaZulu-Natal |
| Mariannhill | Pinetown | KwaZulu-Natal |
| Mariannhill Monastery | Pinetown | KwaZulu-Natal |
| Maytime Centre | Pinetown | KwaZulu-Natal |
| Milbank | Pinetown | KwaZulu-Natal |
| Polopony | Pinetown | KwaZulu-Natal |
| Safari St Johns | Pinetown | KwaZulu-Natal |
| Shongweni | Pinetown | KwaZulu-Natal |
| Stockville | Pinetown | KwaZulu-Natal |