Groes-faen is a village in Rhondda Cynon Taf, Wales.
It is situated within the CF72 postcode district, which is within the Pontyclun post town.
CF72 is the only postcode district within the Pontyclun post town.
The Pontyclun post town is within the Cardiff postcode area.
Administrative Ward: Pont-y-clun
Administrative District: Rhondda Cynon Taf
Country: Wales
UK Parliament: Pontypridd