| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Koyaki, Siana | 20500 |
| Postal/ZIP Codes in Megwara, Siana | 20500 |
| Postal/ZIP Codes in Narasha, Siana | 20500 |
| Postal/ZIP Codes in Nkoilale, Siana | 20500 |
| Postal/ZIP Codes in Olkinyei, Siana | 20500 |
| Postal/ZIP Codes in Sekenani, Siana | 20500 |
| Postal/ZIP Codes in Siana, Siana | 20500 |