6300 is also the box code for 5 post office box locations.
Street addresses with code 6300
| Suburb | Town | Province |
|---|---|---|
| Arcadia | Humansdorp | Eastern Cape |
| Boskloof | Humansdorp | Eastern Cape |
| Humansdorp | Humansdorp | Eastern Cape |
| Industrial Area | Humansdorp | Eastern Cape |
| Kruisfontein | Humansdorp | Eastern Cape |
| Kwanomzamo | Humansdorp | Eastern Cape |
| Moeras River | Humansdorp | Eastern Cape |
| Panorama | Humansdorp | Eastern Cape |
PO Box locations with code 6300
| Suburb | Town | Province |
|---|---|---|
| Graslaagte | Humansdorp | Eastern Cape |
| Humansdorp | Humansdorp | Eastern Cape |
| Moeras River | Humansdorp | Eastern Cape |
| Paradise Beach | Humansdorp | Eastern Cape |
| Vaal Dam | Humansdorp | Eastern Cape |