Twyn-yr-Odyn is a village in the Vale of Glamorgan, Wales.
It is situated within the CF5 postcode district, which is within the Cardiff post town.
The full list of postcode districts within the Cardiff post town is as follows:
The Cardiff post town is within the Cardiff postcode area.
Administrative Ward: Wenvoe
Administrative District: The Vale of Glamorgan
Country: Wales
UK Parliament: Vale of Glamorgan