The CF postcode area, also known as the Cardiff postcode area,[2] is a group of 35 postcode districts for post towns: Cardiff, Bridgend, Merthyr Tydfil, Caerphilly, Aberdare, Bargoed, Barry, Cowbridge, Dinas Powys, Ferndale, Hengoed, Llantwit Major, Maesteg, Mountain Ash, Penarth, Pentre, Pontyclun, Pontypridd, Porth, Porthcawl, Rhoose, Sully, Tonypandy, Treharris and Treorchy in south Wales.
The CF postcode area is one of six with a population above 1 million.
[3] The approximate coverage of the postcode districts: