21702 is the Postal Code/PLZ Code for Ahlerstedt in the Germany State of Lower Saxony and the District of Landkreis Stade.
| Postal Code | 21702 |
| Postal Code Name | Ahlerstedt |
| State | Lower Saxony |
| District | Landkreis Stade |
| Timezone | Central European Summer Time (CEST) |
| Adjacent Postal Codes | 21644 21698 27404 27419 27446 |