This district of Wales has 5 different constituencies: Caerphilly, Cardiff North, Pontypridd, Islwyn, Merthyr Tydfil and Rhymney,
The nearest stations within this postcode district are the following: Caerphilly, Aber, Lisvane and Thornhill, Taffs Well, Energlyn and Churchill Park, Llanbradach, Trefforest Estate, Trefforest, Ystrad Mynach, Hengoed, Pengam, Bargoed, Gilfach Fargoed, Brithdir, Tir-Phil, Pontlottyn, Rhymney,
This district has the following 19 wards: St. Martins, Morgan Jones, Penyrheol, Rhiwbina, Whitchurch and Tongwynlais, Taffs Well, St. James, Aber Valley, Llanbradach, Bedwas, Trethomas and Machen, Ystrad Mynach, Hengoed, Maesycwmmer, St. Cattwg, Aberbargoed, Gilfach, Bargoed, Darren Valley, Pontlottyn,