| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Eko-Eyuyu, Udo | 302103 |
| Postal/ZIP Codes in Etete, Udo | 302103 |
| Postal/ZIP Codes in Iguafole, Udo | 302103 |
| Postal/ZIP Codes in Igueze, Udo | 302103 |
| Postal/ZIP Codes in Iguokolor, Udo | 302103 |
| Postal/ZIP Codes in Iguowan, Udo | 302103 |
| Postal/ZIP Codes in Okomu Oil, Udo | 302103 |
| Postal/ZIP Codes in Okosa, Udo | 302103 |
| Postal/ZIP Codes in Udo, Udo | 302103 |
| Postal/ZIP Codes in Udo-Aken, Udo | 302103 |
| Postal/ZIP Codes in Ugolo, Udo | 302103 |
| Postal/ZIP Codes in Urhezen, Udo | 302103 |