Croesor is a village in Gwynedd, Wales.
It is situated within the LL48 postcode district, which is within the Penrhyndeudraeth post town.
LL48 is the only postcode district within the Penrhyndeudraeth post town.
The Penrhyndeudraeth post town is within the Llandudno postcode area.
Administrative Ward: Penrhyndeudraeth
Administrative District: Gwynedd
Country: Wales
UK Parliament: Dwyfor Meirionnydd