| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Agbaja-Nkporo, Knporo | 442111 |
| Postal/ZIP Codes in Amurie-Nkporo, Knporo | 442111 |
| Postal/ZIP Codes in Eleghu-Nkporo, Knporo | 442111 |
| Postal/ZIP Codes in Etitiana-Nkporo, Knporo | 442111 |
| Postal/ZIP Codes in Ndi-Nko-Nkporo, Knporo | 442111 |
| Postal/ZIP Codes in Oboria Nkporo, Knporo | 442111 |
| Postal/ZIP Codes in Okwoko-Nkporo, Knporo | 442111 |