Llwyncelyn is a village in Rhondda Cynon Taf, Wales.
It is situated within the CF39 postcode district, which is within the Porth post town.
CF39 is the only postcode district within the Porth post town.
The Porth post town is within the Cardiff postcode area.
Administrative Ward: Porth
Administrative District: Rhondda Cynon Taf
Country: Wales
UK Parliament: Rhondda