| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Akpororo Camp, Umaza | 302104 |
| Postal/ZIP Codes in Camps, Umaza | 302104 |
| Postal/ZIP Codes in Essi, Umaza | 302104 |
| Postal/ZIP Codes in Iguekahen, Umaza | 302104 |
| Postal/ZIP Codes in Iguelaho, Umaza | 302104 |
| Postal/ZIP Codes in Lakalolo, Umaza | 302104 |
| Postal/ZIP Codes in Obobaifo, Umaza | 302104 |
| Postal/ZIP Codes in Ogunwake I & II, Umaza | 302104 |
| Postal/ZIP Codes in Ojomu, Umaza | 302104 |
| Postal/ZIP Codes in Sayo, Umaza | 302104 |
| Postal/ZIP Codes in Ugbokua, Umaza | 302104 |
| Postal/ZIP Codes in Umaza, Umaza | 302104 |