Andoni is one of the 23 Local Government Areas (LGAs) in Rivers State, Nigeria. Its headquarters is located in the town of Ngo.
Locations within the LGA make use of the same postal code.
Here’s the postcode for areas in Andoni:
| Location | Postal Code |
| Okwaniok | 503102 |
| Oloma | 503102 |
| Otak | 503102 |
| Otiga | 503102 |
| Otuafik | 503102 |
| Otudon | 503102 |
| Otugan | 503102 |
| Oyookoto | 503102 |
| Samanga | 503102 |
| Uyeada | 503102 |
| Uyengala | 503102 |
| Weret | 503102 |
| Okukpoi | 503102 |
| Anyama-Aganna | 503102 |
| Echitcham | 503102 |
| Iwo | 503102 |
| Anyamaboko | 503102 |
| Egbomu | 503102 |
| Iwoogone | 503102 |
| Asakokola | 503102 |
| Egbormu | 503102 |
| Kapamant | 503102 |
| Asakokolo | 503102 |
| Egwede | 503102 |
| Kwake | 503102 |
| Asarama | 503102 |
| Ekede | 503102 |
| Mertege | 503102 |
| Asuk-Ama | 503102 |
| Friday | 503102 |
| Muma | 503102 |
| Asuk-Oyet | 503102 |
| Glilea | 503102 |
| Nchiama | 503102 |
| Asurubaa | 503102 |
| Ibotobom | 503102 |
| Ngo | 503102 |
| Ataba | 503102 |
| Ibotokpon | 503102 |
| Obiama | 503102 |
| Aturube | 503102 |
| Ichama | 503102 |
| Obot-Usut | 503102 |
| Ayama | 503102 |
| Igbanga | 503102 |
| Obukolum | 503102 |
| Darile | 503102 |
| Ikuru | 503102 |
| Ogbidim | 503102 |
| Dema | 503102 |
| Inyoukpo | 503102 |
| Okokiri | 503102 |
| Amaoke | 503102 |
| Dimama | 503102 |
| Isidum | 503102 |
| Okoro Iro | 503102 |
| Amatamuno | 503102 |
| Ebon-Okolo | 503102 |
| Isioke | 503102 |
| Okorolo | 503102 |
| Anyama | 503102 |
| Ebuguma | 503102 |
| Isiokwan | 503102 |
| Aam-Ekut | 503102 |
| Aama-Runner | 503102 |
| Afradiki | 503102 |
| Aganna | 503102 |
| Aganofor | 503102 |
| Agbachichama | 503102 |
| Agbadama | 503102 |
| Agbadem | 503102 |
| Agbakoroma | 503102 |
| Agwut Obolo | 503102 |
| Ama Sunday | 503102 |
| Amanku | 503102 |
| Amansa | 503102 |