| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Amafor, Isingwu | 440106 |
| Postal/ZIP Codes in Amafor-Ikungwu, Isingwu | 440106 |
| Postal/ZIP Codes in Nkwoachara, Isingwu | 440106 |
| Postal/ZIP Codes in Umoka, Isingwu | 440106 |
| Postal/ZIP Codes in Umuaganga, Isingwu | 440106 |
| Postal/ZIP Codes in Umuda, Isingwu | 440106 |
| Postal/ZIP Codes in Umuokoro, Isingwu | 440106 |
| Postal/ZIP Codes in Umuokwelenta, Isingwu | 440106 |
| Postal/ZIP Codes in Umuoriehi, Isingwu | 440106 |