| Place | Post Code |
|---|---|
| Gatunga, Gatunga | 60404 |
| Kamaguna, Gatunga | 60400 |
| Kamwathu, Gatunga | 60400 |
| Kathangachini, Gatunga | 60400 |
| Twathanju, Gatunga | 60400 |
| All postal codes in Tharaka | |
|---|---|
| Chiakariga, Tharaka | |
| Gatunga, Tharaka | |
| Marimanti, Tharaka | |
| Mukothima, Tharaka | |
| Nkondi, Tharaka | |