| Place | Postal Code |
|---|---|
| Afaha Obio Eno, Ibiono (Southern) | 520115 |
| Asating, Ibiono (Southern) | 520115 |
| Ikot Ada Idem, Ibiono (Southern) | 520115 |
| Ikot Akpabio, Ibiono (Southern) | 520115 |
| Ikot Ambang, Ibiono (Southern) | 520115 |
| Ikot Ekpo Obio, Ibiono (Southern) | 520115 |
| Ikot Enyin, Ibiono (Southern) | 520115 |
| Ikot Obio Ama, Ibiono (Southern) | 520115 |
| Ikot Osukpong, Ibiono (Southern) | 520115 |
| Ikot Ukana, Ibiono (Southern) | 520115 |
| Ikot Ukpong, Ibiono (Southern) | 520115 |
| Ikpa Ibiono, Ibiono (Southern) | 520115 |
| Ikpidop, Ibiono (Southern) | 520115 |
| Mbiabam Ibiono, Ibiono (Southern) | 520115 |
| Mbiakpan Atan, Ibiono (Southern) | 520115 |
| Miakpan Ikot Edem, Ibiono (Southern) | 520115 |
| Nkin Ibiono, Ibiono (Southern) | 520115 |
| Obio Ibiono, Ibiono (Southern) | 520115 |
| Okobo Ibiono, Ibiono (Southern) | 520115 |
| Use Ikot Ekop, Ibiono (Southern) | 520115 |