The TREFRIW Post Town in Caernarfonshire

The TREFRIW Post Town is a Postal Region within the historic Postal County of Caernarfonshire

When addressing mail to properties within this area it is important to write TREFRIW in capital letters before the postcode.

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You no longer need to write the postal county of Caernarfonshire when writing an address but many still do because it's fun and avoids confusion when a postal town shares the same name.

Map of the TREFRIW Post town
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Map of the TREFRIW Post Town