Udung-Uko Local Government Area (LGA) in Akwa Ibom State, Nigeria, has postal codes ranging from 523105 to 523113. Below is a list of postal codes for different towns and districts in Udung-Uko.
| Districts | Postal Code |
|---|---|
| Edikor Eyiba | 523105 |
| Edikor Eyobiosio | 523105 |
| Edikor Eyokpu | 523105 |
| Ekiebong | 523113 |
| Ekim | 523106 |
| Ekim | 523106 |
| Enino | 523105 |
| Eniongo | 523105 |
| Esin Ufot | 523101 |
| Esuk Oro | 523101 |
| Eye Oko | 523105 |
| Eyiba | 523105 |
| Eyo Atai | 523105 |
| Eyo Atang | 523105 |
| Eyo Ating Osung | 523105 |
| Eyo Ating-Osung | 523105 |
| Eyo Ebieme | 523105 |
| Eyo Efai | 523113 |
| Eyo Ekung Inyang | 523101 |
| Eyo Esin | 523105 |
| Eyo Esio Osung | 523105 |
| Eyo Esio Usung | 523105 |
| Eyo Nsek | 523105 |
| Eyo Obiosio | 523101 |
| Eyo Okponung | 523105 |
| Eyo Ukpe | 523105 |
| Eyo Ukut | 523113 |
| Eyo Uliong | 523105 |
| Eyo Uliong | 523105 |
| Eyo Ulung | 523105 |
| Eyo Uwe | 523105 |
| Eyo-Ating | 523105 |
| Eyobiosio | 523105 |
| Eyobisung | 523105 |
| Eyofin | 523105 |
| Eyofin | 523105 |
| Eyoko | 523105 |
| Eyokponung | 523105 |
| Eyokpu | 523105 |
| Eyosio-Osung | 523105 |
| Eyotai | 523105 |
| Ibete | 523113 |
| Ibuet Ikot | 523113 |
| Uba | 523113 |
| Ubodung | 523106 |
| Ubodung | 523106 |
| Uboro Isong Inyang | 523105 |
| Ubotuong | 523113 |
| Udini | 523113 |
| Udng Otok | 523105 |
| Udombo | 523113 |
| Udung Adatang | 523105 |
| Udung Adatang | 523105 |
| Udung Esien | 523101 |
| Udung Esio | 523105 |
| Udung Eyo Adaeba | 523113 |
| Udung Uko | 523105 |
| Udung Ulo | 523101 |
| Udung Usotaiudung Ekung | 523101 |
| Uko Akpan | 523113 |
| Usung | 523105 |