About postcode 6421
The postcode 6421 routes mail to Heerlen in the Limburg region of Netherlands. Use it as the postal segment of any address in this area, and confirm unusual addresses with the local postal operator.
Netherlands ยท Postcode
6421 - Heerlen
Postcode 6421 is Heerlen in Limburg, Netherlands.
| Postcode | 6421 |
| Place | Heerlen |
| Region | Limburg |
| District | Gemeente Heerlen |
| Country | Netherlands (NL) |
| Coordinates | 50.9276, 5.9518 (map) |