Caerphilly is a town in South Wales, at the southern end of the Rhymney Valley. It is the largest town in Caerphilly (county borough).
Historically it was in the county of Glamorgan, on the border with Monmouthshire. At the 2001 Census, the town had a population of 30,388. It is a commuter town for Cardiff and Newport, 7.5 miles and 12 miles away respectively, and is separated from the Cardiff suburbs of Lisvane and Rhiwbina by Caerphilly mountain and gives its name to Caerphilly cheese.
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