As a box code, 3310 is used for 18 post office box locations.
Suburbs using 3310 as street code
| Suburb | Town | Province |
|---|---|---|
| Colita | Estcourt | KwaZulu-Natal |
| Drakensview | Estcourt | KwaZulu-Natal |
| Estcourt | Estcourt | KwaZulu-Natal |
| Forderville | Estcourt | KwaZulu-Natal |
| Papkuilsfontein | Estcourt | KwaZulu-Natal |
| Phaphankulu | Estcourt | KwaZulu-Natal |
| Wembezi | Estcourt | KwaZulu-Natal |
PO Boxes using 3310
| Suburb | Town | Province |
|---|---|---|
| Bhekabezayo | Estcourt | KwaZulu-Natal |
| Cathkin Park | Estcourt | KwaZulu-Natal |
| Champagne Castle | Estcourt | KwaZulu-Natal |
| Estcourt | Estcourt | KwaZulu-Natal |
| Forderville | Estcourt | KwaZulu-Natal |
| Goodhome | Estcourt | KwaZulu-Natal |
| Hlathi Khulu | Estcourt | KwaZulu-Natal |
| Kwa Ndaba | Estcourt | KwaZulu-Natal |
| Kwadlamini | Estcourt | KwaZulu-Natal |
| Mahlutshini | Estcourt | KwaZulu-Natal |
| Mdanishini | Estcourt | KwaZulu-Natal |
| Mdwebu | Estcourt | KwaZulu-Natal |
| Mhubheni | Estcourt | KwaZulu-Natal |
| Shayamoya | Estcourt | KwaZulu-Natal |
| Sobabili | Estcourt | KwaZulu-Natal |
| Wembezi | Estcourt | KwaZulu-Natal |
| Zwelisha | Estcourt | KwaZulu-Natal |
| Zwelisha Zone 10 | Estcourt | KwaZulu-Natal |