As a box code, 3855 is used for 16 post office box locations.
PO Boxes using 3855
| Suburb | Town | Province |
|---|---|---|
| Amanzimnyama | Nkandla | KwaZulu-Natal |
| Bambisanani | Nkandla | KwaZulu-Natal |
| Cholwane | Nkandla | KwaZulu-Natal |
| Cwezi | Nkandla | KwaZulu-Natal |
| Ithala | Nkandla | KwaZulu-Natal |
| Lushaba | Nkandla | KwaZulu-Natal |
| Mahlayizeni | Nkandla | KwaZulu-Natal |
| Mashinga | Nkandla | KwaZulu-Natal |
| Mvutshini | Nkandla | KwaZulu-Natal |
| Ngwengweni | Nkandla | KwaZulu-Natal |
| Nkandla | Nkandla | KwaZulu-Natal |
| Nkandla Village | Nkandla | KwaZulu-Natal |
| Nkungumathe | Nkandla | KwaZulu-Natal |
| Sibomvu | Nkandla | KwaZulu-Natal |
| Vuleka | Nkandla | KwaZulu-Natal |
| White City | Nkandla | KwaZulu-Natal |