| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Chehe, Iriaini | 10100 |
| Postal/ZIP Codes in Gatundu, Iriaini | 10100 |
| Postal/ZIP Codes in Kaguyu, Iriaini | 10100 |
| Postal/ZIP Codes in Karia, Iriaini | 10100 |
| Postal/ZIP Codes in Kiaguthu, Iriaini | 10100 |
| Postal/ZIP Codes in Kiamwangi, Iriaini | 10100 |
| Postal/ZIP Codes in Thegenge, Iriaini | 10100 |