Okrika Local Government Area in Rivers State uses postal codes is 500103.
Here are the postal codes for the towns and districts in Okrika:
| Place/Area | Postal code |
| Semembiri -Ama | 500103 |
| Teriapu Kiriama | 500103 |
| Abam – Ama II | 500103 |
| Kalio -Ama | 500103 |
| Omodere -Ama | 500103 |
| Abioboama | 500103 |
| Mbikiri | 500103 |
| Opuada -Ama | 500103 |
| Agbkien- Ama | 500103 |
| Ndubusiama | 500103 |
| Oraberekiri -Ama | 500103 |
| Andikiri | 500103 |
| Ngbagbebokoama | 500103 |
| Otobipi | 500103 |
| Asemeningolike | 500103 |
| Ngololo | 500103 |
| Owuogonoama | 500103 |
| Dankiri | 500103 |
| Oba – Ama | 500103 |
| Sara -Ama | 500103 |
| Dikiboama | 500103 |
| Obiarime -Ama | 500103 |
| Ekerekana | 500103 |
| Odokorobie | 500103 |
| George -Ama | 500103 |
| Ogan-Ama | 500103 |
| Ibaka | 500103 |
| Ogbogbo | 500103 |
| Ibuluy-Dikiboama | 500103 |
| Ogoloma | 500103 |
| Ikirikoama | 500103 |
| Okirika | 500103 |
| Ikpokiri – Ama II | 500103 |
| Okochiri | 500103 |
| Isaka | 500103 |
| Okujagu Ama | 500103 |
| Iwokiri – Ama | 500103 |
| Okumgba -Ama | 500103 |
| Iyokiri | 500103 |
| Omoaobi | 500103 |