Groeslon is a village in Gwynedd, Wales.

It is situated within the LL54 postcode district, which is within the Caernarfon post town.

The full list of postcode districts within the Caernarfon post town is as follows:

The Caernarfon post town is within the Llandudno postcode area.

Key data for Groeslon:

Administrative Ward: Groeslon

Administrative District: Gwynedd

Country: Wales

UK Parliament: Arfon

A map showing the location of Groeslon within the LL54 postcode district