| Place | Post Code |
|---|---|
| Aba Isu, Isu | 442103 |
| Amachi, Isu | 442103 |
| Amakarama, Isu | 442103 |
| Amukabi, Isu | 442103 |
| Iheosu, Isu | 442103 |
| Obieze, Isu | 442103 |
| Obomime, Isu | 442103 |
| All postal codes in Arochukwu | |
|---|---|
| Amaeke Abam, Arochukwu | |
| Arochukwu, Arochukwu | |
| Ihechiowa, Arochukwu | |
| Isu, Arochukwu | |
| Ohafor, Arochukwu | |
| Ovukwu Abam, Arochukwu | |
| Ututu, Arochukwu | |