| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Mbeshere, Oloirieni | 23111 |
| Postal/ZIP Codes in Meiroti, Oloirieni | 23111 |
| Postal/ZIP Codes in Moivoi, Oloirieni | 23111 |
| Postal/ZIP Codes in Mwanama, Oloirieni | 23111 |
| Postal/ZIP Codes in Roman Catholic, Oloirieni | 23111 |
| Postal/ZIP Codes in Suye, Oloirieni | 23111 |