Udu Local Government Area (LGA) of Delta State, Nigeria, has several Districts which all make use of the same postal codes.
Below are all the postal codes for towns within Udu LGA:
| Location | Postal Code |
| Udu | 330103 |
| Ugbisi | 330103 |
| Ujevwu | 330103 |
| Ukperheren | 330103 |
| Ukpiovwini | 330103 |
| Uvwian | 330103 |
| Ahadja | 330103 |
| Opete | 330103 |
| Asagba | 330103 |
| Orhuwhorum | 330103 |
| Ayama | 330103 |
| Ovwodokpokpo | 330103 |
| Edjophe | 330103 |
| Owhrode | 330103 |
| Egiegi | 330103 |
| Tareri | 330103 |
| Egini | 330103 |
| Ubogo | 330103 |
| Ekete | 330103 |
| Ekorota | 330103 |
| Emadadja | 330103 |
| Erhieuiohor | 330103 |
| Obodo | 330103 |
| Obubu | 330103 |
| Ogbe-Udu | 330103 |
| Oghior | 330103 |
| Okolo | 330103 |
| Olari | 330103 |