30657 is the Postal Code/PLZ Code for Hannover in the Germany State of Lower Saxony and the District of Landkreis Region Hannover.
| Postal Code | 30657 |
| Postal Code Name | Hannover |
| State | Lower Saxony |
| District | Landkreis Region Hannover |
| Timezone | Central European Summer Time (CEST) |
| Adjacent Postal Codes | 30177 30179 30655 30659 30851 30853 30916 |