21756 is the Postal Code/PLZ Code for Osten in the Germany State of Lower Saxony and the District of Landkreis Cuxhaven.
| Postal Code | 21756 |
| Postal Code Name | Osten |
| State | Lower Saxony |
| District | Landkreis Cuxhaven |
| Timezone | Central European Summer Time (CEST) |
| Adjacent Postal Codes | 21706 21712 21734 21737 21745 21787 |