Z
| Town name | Postal code |
| Zamdela | 1949 |
| Zastron | 9945 |
| Zastron | 9950 |
| Zastron | 9951 |
| Zeerust | 2851 |
| Zeerust | 2865 |
| Zeerust | 2867 |
| Zeerust | 2874 |
| Zeerust | 2876 |
| Zeerust | 2881 |
| Zeerust | 2882 |
| Zeerust | 2883 |
| Zeerust | 2884 |
| Zeerust | 2885 |
| Zeerust | 2886 |
| Zeerust | 2887 |
| Zeerust | 2888 |
| Zeerust | 2889 |
| Zeerust | 2890 |
| Zeerust | 2891 |
| Zeerust | 2895 |
| Zwide | 6004 |
| Zwide | 6201 |
