| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Chepkoti, Siyoi | 30600 |
| Postal/ZIP Codes in Kaibos, Siyoi | 30600 |
| Postal/ZIP Codes in Kapchilia, Siyoi | 30600 |
| Postal/ZIP Codes in Kapsurum, Siyoi | 30600 |
| Postal/ZIP Codes in Kipkorinya, Siyoi | 30600 |
| Postal/ZIP Codes in Paraywa, Siyoi | 30600 |
| Postal/ZIP Codes in Talau, Siyoi | 30600 |