| Place | Post Code |
|---|---|
| Abayama, Iboku | 541106 |
| Ada Iba, Iboku | 541106 |
| Adana Mbaibo, Iboku | 541106 |
| Adiabo Akani Obio, Iboku | 541106 |
| Adun Mbiabo, Iboku | 541106 |
| Afaha, Iboku | 541106 |
| Akani Obio Ukem, Iboku | 541106 |
| Akpatrefe, Iboku | 541106 |
| Akwa Efe, Iboku | 541106 |
| Akwa Iyoke, Iboku | 541106 |
| Akwa Obio Inwang, Iboku | 541106 |
| Atan Oku, Iboku | 541106 |
| Ebe Akpo, Iboku | 541106 |
| Edik Iko, Iboku | 541106 |
| Edit Iko Ekpo-, Iboku | 541106 |
| Edit Ikpa Eman, Iboku | 541106 |
| Efuk Ifako, Iboku | 541106 |
| Ekong Atan Oku, Iboku | 541106 |
| Ekot Antigha Udo, Iboku | 541106 |
| Ekot Efiok Eyo, Iboku | 541106 |
| Ekpenyang Eyo, Iboku | 541106 |
| Ekpenyong, Iboku | 541106 |
| Ekpri Iyoki, Iboku | 541106 |
| Ekwa Iyoke, Iboku | 541106 |
| Eseku, Iboku | 541106 |
| Esku Ikot Itam, Iboku | 541106 |