| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Efik Ibuno, Mbiabo | 520110 |
| Postal/ZIP Codes in Etehenten, Mbiabo | 520110 |
| Postal/ZIP Codes in Eton Ani, Mbiabo | 520110 |
| Postal/ZIP Codes in Ikot Efah, Mbiabo | 520110 |
| Postal/ZIP Codes in Ikot Offiong, Mbiabo | 520110 |
| Postal/ZIP Codes in Ikot Out, Mbiabo | 520110 |
| Postal/ZIP Codes in Mbiabo Edere, Mbiabo | 520110 |
| Postal/ZIP Codes in Mkpana Uruk, Mbiabo | 520110 |
| Postal/ZIP Codes in Nya Anating, Mbiabo | 520110 |
| Postal/ZIP Codes in Okono, Mbiabo | 520110 |
| Postal/ZIP Codes in Ufok Offiong Ani, Mbiabo | 520110 |