About postal code 4203
The postal code 4203 routes mail to Grellingen in the Kanton Basel-Landschaft region of Switzerland. Use it as the postal segment of any address in this area, and confirm unusual addresses with the local postal operator.
Switzerland ยท Postal code
4203 - Grellingen
Postal code 4203 is Grellingen in Kanton Basel-Landschaft, Switzerland.
| Postal code | 4203 |
| Place | Grellingen |
| Region | Kanton Basel-Landschaft |
| District | Bezirk Laufen |
| Country | Switzerland (CH) |
| Coordinates | 47.439, 7.5866 (map) |