| Place | Postal Code |
|---|---|
| Koyaki, Siana | 20500 |
| Megwara, Siana | 20500 |
| Narasha, Siana | 20500 |
| Nkoilale, Siana | 20500 |
| Olkinyei, Siana | 20500 |
| Sekenani, Siana | 20500 |
| Siana, Siana | 20500 |
| Postal Codes in Narok West | |
|---|---|
| Ilmotiok, Narok West | |
| Mara, Narok West | |
| Naikarra, Narok West | |
| Siana, Narok West | |