| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Obiekwesu, Aro-Ngwa | 453114 |
| Postal/ZIP Codes in Okpuala-Aro, Aro-Ngwa | 453114 |
| Postal/ZIP Codes in Umuarakpa, Aro-Ngwa | 453114 |
| Postal/ZIP Codes in Umuejie, Aro-Ngwa | 453114 |
| Postal/ZIP Codes in Umugwua, Aro-Ngwa | 453114 |
| Postal/ZIP Codes in Umukaa, Aro-Ngwa | 453114 |
| Postal/ZIP Codes in Umukai, Aro-Ngwa | 453114 |
| Postal/ZIP Codes in Umuohia, Aro-Ngwa | 453114 |
| Postal/ZIP Codes in Umuonyenkwu, Aro-Ngwa | 453114 |
| Postal/ZIP Codes in Umuotuo, Aro-Ngwa | 453114 |