| Place | Post Code |
|---|---|
| Obinomba, Umukwata | 322111 |
| Owah Abbi, Umukwata | 322111 |
| Umukwata-Uno, Umukwata | 322111 |
| All postal codes in Ukwuani | |
|---|---|
| Akoku, Ukwuani | |
| Amai, Ukwuani | |
| Ebedei, Ukwuani | |
| Eziokpor, Ukwuani | |
| Ezionum, Ukwuani | |
| Obiarumu, Ukwuani | |
| Umuebu, Ukwuani | |
| Umukwata, Ukwuani | |
| Umutu, Ukwuani | |