| Place | Post Code |
|---|---|
| Gorgane, Koper | None |
| Koper, Koper | None |
| Kpai, Koper | None |
| Lopal, Koper | None |
| Pirkon, Koper | None |
| Toulpouo, Koper | None |
| Zoner, Koper | None |
| All postal codes in Ioba | |
|---|---|
| Dano, Ioba | |
| Dissin, Ioba | |
| Guéguéré, Ioba | |
| Koper, Ioba | |
| Niégo, Ioba | |
| Oronkua, Ioba | |
| Ouessa, Ioba | |
| Zambo, Ioba | |