| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Agba, Isu | 491106 |
| Postal/ZIP Codes in Agbabor, Isu | 491106 |
| Postal/ZIP Codes in Agueke, Isu | 491106 |
| Postal/ZIP Codes in Amannator, Isu | 491106 |
| Postal/ZIP Codes in Isu-Achara, Isu | 491106 |
| Postal/ZIP Codes in Mbala Ukwu, Isu | 491106 |
| Postal/ZIP Codes in Mgbelaeze, Isu | 491106 |
| Postal/ZIP Codes in Obeagu, Isu | 491106 |
| Postal/ZIP Codes in Ojiegbe, Isu | 491106 |
| Postal/ZIP Codes in Umunika, Isu | 491106 |