| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Gaciongo, Tharaka | 90400 |
| Postal/ZIP Codes in Gakombe, Tharaka | 90400 |
| Postal/ZIP Codes in Gatoroni, Tharaka | 90400 |
| Postal/ZIP Codes in Kamaindi, Tharaka | 90400 |
| Postal/ZIP Codes in Kanthungu, Tharaka | 90400 |
| Postal/ZIP Codes in Kanyengya, Tharaka | 90400 |
| Postal/ZIP Codes in Kiseuni, Tharaka | 90400 |