| Place | Post Code |
|---|---|
| Aalwynfleur, Swellendam | 6670 |
| Aloeridge, Swellendam | 6670 |
| Beverley Hills, Swellendam | 6670 |
| Heideland, Swellendam | 6670 |
| Kwa-Nokothula, Swellendam | 6670 |
| Morestond (More Stand, Swellendam) | 6670 |
| Panorama, Swellendam | 6670 |
| Railton, Swellendam | 6740 |
| Smarty Town, Swellendam | 6740 |
| Swellendam, Swellendam | 6740 |
| White City, Swellendam | 6740 |
| All postal codes in Overberg | |
|---|---|
| Kaap Agulhas (Cape Agulhas, Overberg) | |
| Overstrand, Overberg | |
| Swellendam, Overberg | |
| Theewaterskloof, Overberg | |