Ugwunagbo is a Local Government Area (LGA) in Abia State, Nigeria. The postal codes in Ugwunagbo are primarily 453120.
Here are the postal codes of the streets and districts in Ugwunagbo:
| Area/Place | Postcode |
| Abayi | 453120 |
| Obegu | 453120 |
| Akanu | 453120 |
| Obuzor | 453120 |
| Alaoji | 453120 |
| Osusu – Aku | 453120 |
| Amaokpu-Umuitiri | 453120 |
| Ozaa-Umuebukwu | 453120 |
| Amaorji | 453120 |
| Ukebe | 453120 |
| Amapu-Ukebe | 453120 |
| Umuaja | 453120 |
| Amapu-Umodo | 453120 |
| Umuama-Oke | 453120 |
| Amavo | 453120 |
| Umuchekwu | 453120 |
| Amuzu-Amaikoro | 453120 |
| Umugo | 453120 |
| Asa-Amuhi | 453120 |
| Umule-Osoamadi | 453120 |
| Obegu | 453120 |
| Obuzor | 453120 |
| Osusu-Aku | 453120 |
| Ozaa-Umuebukwu | 453120 |
| Amaorji | 453120 |
| Ukebe | 453120 |
| Amapu-Ukebe | 453120 |
| Umuaja | 453120 |
| Amapu-Umodo | 453120 |
| Umuama-Oke | 453120 |
| Amavo | 453120 |
| Umuchewu | 453120 |
| Amuzu-Amaikoro | 453120 |
| Umugo | 453120 |
| Asa-Amuhi | 453120 |
| Umule-Osoamadi | 453120 |
| Asa-Nnentu | 453120 |
| Umunkama | 453120 |
| Asa-Oberie | 453120 |