As a box code, 4340 is used for 7 post office box locations.
PO Boxes using 4340
| Suburb | Town | Province |
|---|---|---|
| Verulam | Durban | KwaZulu-Natal |
| Buffelsdraai | Verulam | KwaZulu-Natal |
| Emthembeni | Verulam | KwaZulu-Natal |
| Hazelmere | Verulam | KwaZulu-Natal |
| Osindisweni Hospital | Verulam | KwaZulu-Natal |
| Somaria's Store | Verulam | KwaZulu-Natal |
| Umdloti Heights | Verulam | KwaZulu-Natal |