Here you can learn how to restrict shipping method availability based on the customer's postal code.
You can use postal code restrictions to limit the availability of a shipping method to selected locations in Finland and Åland. You can use fixed postal codes (e.g. 00100 = delivery only to the Helsinki city center) or postal code range (e.g. 00* = delivery to the whole of Helsinki).
If a shipping method is subject to a postal code restriction and the customer's address is out of its bounds, the shipping method won't be displayed at checkout at all.
Adding postal code restrictions
- Add the desired postal code restrictions for the shipping method in the Allowed postal codes item.
In the field, enter specific postal codes or use the * character to define a postal code range. For example, you can allow the entire Helsinki region by entering 001* in the field
Once you've defined the desired postal code restrictions, the shipping method will be available only to the locations you've specified.
Removing postal code restrictions
To remove a shipping method's postal code restriction, click the 
icon visible next to the restriction in the shipping method's details.
When you remove a shipping method's postal code restriction, the shipping method won't be available at checkout if the customer's postal code was covered by that restriction. Removing a restriction doesn't affect already-existing orders.