51645 is the Postal Code/PLZ Code for Gummersbach in the Germany State of North Rhine-Westphalia and the District of Landkreis Oberbergischer Kreis.
| Postal Code | 51645 |
| Postal Code Name | Gummersbach |
| State | North Rhine-Westphalia |
| District | Landkreis Oberbergischer Kreis |
| Timezone | Central European Summer Time (CEST) |
| Adjacent Postal Codes | 51580 51643 51647 51674 51702 51766 |