Williamstown is a village in Rhondda Cynon Taf, Wales.

It is situated within the CF40 postcode district, which is within the Tonypandy post town.

CF40 is the only postcode district within the Tonypandy post town.

The Tonypandy post town is within the Cardiff postcode area.


Key data for Williamstown, Rhondda Cynon Taf:

Administrative Ward: Pen-y-graig

Administrative District: Rhondda Cynon Taf

Country: Wales

UK Parliament: Rhondda

A map showing the location of Williamstown, Rhondda Cynon Taf within the CF40 postcode district