As a box code, 6000 is used for 7 post office box locations.
PO Boxes using 6000
| Suburb | Town | Province |
|---|---|---|
| Adcockvale | Gqeberha (Port Elizabeth) | Eastern Cape |
| Brickmakerskloof | Gqeberha (Port Elizabeth) | Eastern Cape |
| Cocketts Hope | Gqeberha (Port Elizabeth) | Eastern Cape |
| Driftsands | Gqeberha (Port Elizabeth) | Eastern Cape |
| Port Elizabeth | Gqeberha (Port Elizabeth) | Eastern Cape |
| Southdene | Gqeberha (Port Elizabeth) | Eastern Cape |
| Struandale | Gqeberha (Port Elizabeth) | Eastern Cape |