| Place | Post Code |
|---|---|
| Brokoyo, Goh) | |
| Gnatroa, Goh) | |
| Inagbéhio, Goh) | |
| Niorouhio, Goh) | |
| Sérihio, Goh) | |
| Seryo, Goh) | |
| Srihio, Goh) | |
| Valoua, Goh) | |
| Wanéwa, Goh) |
| Postal Codes in Gagnoa | |
|---|---|
| Bayota | |
| Dahiépa-Kéhi | |
| Dignago | |
| Dougroupalégnoa | |
| Doukouyo | |
| Gagnoa | |
| Galébouo | |
| Gnagbodougnoa | |
| Guiberoua | |
| Ouragahio | |
| Sérihio | |
| Yopohue | |