| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Adda, Obollo-Etti | 412109 |
| Postal/ZIP Codes in Ohule-Etiti, Obollo-Etti | 412109 |
| Postal/ZIP Codes in Umuesuogwu, Obollo-Etti | 412109 |
| Postal/ZIP Codes in Umuitedo, Obollo-Etti | 412109 |
| Postal/ZIP Codes in Umuoleh, Obollo-Etti | 412109 |
| Postal/ZIP Codes in Umuonyeku, Obollo-Etti | 412109 |
| Postal/ZIP Codes in Umuosigide, Obollo-Etti | 412109 |