| Place | Postal Code |
|---|---|
| Buhwil, Kradolf-Schönenberg | 9215 |
| Kradolf, Kradolf-Schönenberg | 9214 |
| Kradolf-Schönenberg, Kradolf-Schönenberg | 9214 |
| Neukirch an der Thur, Kradolf-Schönenberg | 9217 |
| Olmerswil, Kradolf-Schönenberg | 9217 |
| Schönenberg an der Thur, Kradolf-Schönenberg | 9215 |