15831 is the Postal Code/PLZ Code for Blankenfelde-Mahlow in the Germany State of Brandenburg and the District of Landkreis Teltow-Fläming.
| Postal Code | 15831 |
| Postal Code Name | Blankenfelde-Mahlow |
| State | Brandenburg |
| District | Landkreis Teltow-Fläming |
| Timezone | Central European Summer Time (CEST) |
| Adjacent Postal Codes | 12307 12309 12529 14974 14979 15749 15827 15834 |