| Place | Postal Code |
|---|---|
| Gachika, Kiganjo/Mathari | 10100 |
| Kiganjo, Kiganjo/Mathari | 10102 |
| Kihuyo, Kiganjo/Mathari | 10100 |
| Kirichu, Kiganjo/Mathari | 10100 |
| Mathari, Kiganjo/Mathari | 10100 |
| Nyaribo, Kiganjo/Mathari | 10100 |
| Postal Codes in Nyeri Town | |
|---|---|
| Gatitu/Muruguru, Nyeri Town | |
| Kamakwa/Mukaro, Nyeri Town | |
| Kiganjo/Mathari, Nyeri Town | |
| Ruring'U, Nyeri Town | |
| Rware, Nyeri Town | |