| Place | Post Code |
|---|---|
| Akpabom, Oniong Clan | 524106 |
| Ikot Abasi, Oniong Clan | 524106 |
| Ikot Akpatek, Oniong Clan | 524106 |
| Ikot Annang, Oniong Clan | 524106 |
| Ikot Ebekpo, Oniong Clan | 524106 |
| Ikot Ebidang, Oniong Clan | 524106 |
| Ikot Ebire, Oniong Clan | 524106 |
| Ikot Edor, Oniong Clan | 524106 |
| Ikot Ikom Ibom, Oniong Clan | 524106 |
| Ikot Ndudot, Oniong Clan | 524106 |
| Ikot Nuten, Oniong Clan | 524106 |
| Ikot Udo, Oniong Clan | 524106 |
| Ikwe, Oniong Clan | 524106 |
| Mkpa Eto, Oniong Clan | 524106 |
| Okom, Oniong Clan | 524106 |
| Ukpan, Oniong Clan | 524106 |
| All postal codes in Onna | |
|---|---|
| Awa Clan, Onna | |
| Iquita, Onna | |
| Nung Ndem Clan, Onna | |
| Oniong Clan, Onna | |