| Place | Post Code |
|---|---|
| Atabong, Idua Clan | 524102 |
| Idua, Idua Clan | 524102 |
| Ikot Etok, Idua Clan | 524102 |
| Iseuit Idua, Idua Clan | 524102 |
| Odoro, Idua Clan | 524102 |
| Usung Inyang, Idua Clan | 524102 |
| All postal codes in Eket | |
|---|---|
| Afaha Clan, Eket | |
| Eket Offiong Clan, Eket | |
| Idua Clan, Eket | |
| Okon Clan, Eket | |