As a box code, 4142 is used for 15 post office box locations.
PO Boxes using 4142
| Suburb | Town | Province |
|---|---|---|
| Bayview McP | Chatsworth | KwaZulu-Natal |
| Bottlebrush | Chatsworth | KwaZulu-Natal |
| Church On the Rock | Chatsworth | KwaZulu-Natal |
| Collins Tuck Shop | Chatsworth | KwaZulu-Natal |
| Demat 11 | Chatsworth | KwaZulu-Natal |
| Intake | Chatsworth | KwaZulu-Natal |
| Intutuka | Chatsworth | KwaZulu-Natal |
| Madiba | Chatsworth | KwaZulu-Natal |
| Montford McP | Chatsworth | KwaZulu-Natal |
| Naickers Farm | Chatsworth | KwaZulu-Natal |
| Pompeni | Chatsworth | KwaZulu-Natal |
| Silverglen Nature Reserve | Chatsworth | KwaZulu-Natal |
| Sunshine | Chatsworth | KwaZulu-Natal |
| Welbedacht | Chatsworth | KwaZulu-Natal |
| Demat | Mariannhill | KwaZulu-Natal |