25840 is the Postal Code/PLZ Code for Friedrichstadt in the Germany State of Schleswig-Holstein and the District of Landkreis Nordfriesland. The town of Friedrichstadt is located in Postal Code 25840.
| Postal Code | 25840 |
| Postal Code Name | Friedrichstadt |
| State | Schleswig-Holstein |
| District | Landkreis Nordfriesland |
| Timezone | Central European Summer Time (CEST) |
| Adjacent Postal Codes | 25774 25776 25779 25813 25876 25878 25889 |