21644 is the Postal Code/PLZ Code for Sauensiek in the Germany State of Lower Saxony and the District of Landkreis Stade.
| Postal Code | 21644 |
| Postal Code Name | Sauensiek |
| State | Lower Saxony |
| District | Landkreis Stade |
| Timezone | Central European Summer Time (CEST) |
| Adjacent Postal Codes | 21641 21643 21646 21649 21698 21702 27419 |