Luzern
Updated
In canton Luzern, postal code 6404 corresponds to the locality of Greppen. Like the rest of Luzern, the 6404 area operates under a fully legal and regulated framework. Most profiles are independent, combining Greppen with one or two neighbouring postal codes to cover the local catchment. WhatsApp dominates first contact and incall apartments are the norm. The breadcrumb above links back to the full Luzern canton index — useful if you want to browse beyond the 6404 area.
