Ogba–Egbema–Ndoni Local Government Area in Rivers State uses postal codes ranging from 510103 to 510104.
Here are the postal codes for the towns and districts in Ogba–Egbema–Ndoni:
Ogba-Egbema
| Location | Postcode |
| Usomini | 510103 |
| Okpurukpula | 510103 |
| Okuku | 510103 |
| Okwuzu | 510103 |
| Omoku | 510103 |
| Onuesi -Ogu | 510103 |
| Osiakpu | 510103 |
| Uju | 510103 |
| Ukpazi | 510103 |
| Agah | 510103 |
| Ikiri | 510103 |
| Obrikom | 510103 |
| Akabuka | 510103 |
| Itu | 510103 |
| Obuburu | 510103 |
| Akputa Waterside | 510103 |
| Kreigani | 510103 |
| Ogbogu | 510103 |
| Alinso -Okenu | 510103 |
| Mgbede | 510103 |
| Ohali-Elu | 510103 |
| Ama | 510103 |
| Obagi | 510103 |
| Ohali-Usomini | 510103 |
| Eboaha | 510103 |
| Obakata | 510103 |
| Ohiauga | 510103 |
| Ede | 510103 |
| Obidi | 510103 |
| Okansu | 510103 |
| Egbema | 510103 |
| Obiebe | 510103 |
| Okposi | 510103 |
| Egboda | 510103 |
| Obieti | 510103 |
| Egita-Akabuta | 510103 |
| Obigbo | 510103 |
| Ekpe -Aggah | 510103 |
| Obihuru | 510103 |
| Ekpe -Mgbede | 510103 |
| Obiozumini-Obukegi | 510103 |
| Elehia | 510103 |
| Obite | 510103 |
| Elieta | 510103 |
| Oboh | 510103 |
| Erema | 510103 |
| Obokroha | 510103 |
| Ibewa | 510103 |
| Obosi | 510103 |
Ndoni
| Location | Postcode |
| Umuorieke | 510104 |
| Utu | 510104 |
| Oboaso | 510104 |
| Odugili | 510104 |
| Ogbeogene | 510104 |
| Ogu | 510104 |
| Oniku | 510104 |
| Owajinobia | 510104 |
| Ugbaja | 510104 |
| Umuigwe | 510104 |
| Adiai – Obiofu | 510104 |
| Agwe | 510104 |
| Amuajie | 510104 |
| Ase – Imonita | 510104 |
| Ase-Azaga | 510104 |
| Isara | 510104 |
| Isiukwa | 510104 |
| Ndoni | 510104 |