- This category tree is for websites based in, or exclusively about, the county borough of Caerphilly.
- Caerphilly is the major town of the county borough, north of Cardiff,
- but the borough extends to Newport and Torfaen to the east,
- Blaenau Gwent to the north, as far as Rhymney on the boundary with Brecon,
- Merthyr Tydfil, Abercynon and Pontypridd to the east.
Other languages 1