Let us know.      Local Picture Gallery   View our Picture Galleries for: Risca Gwent Risca Snow      About your Area   Risca Welsh : Rhisga Population 11,455 [1] [2] OS grid reference ST245905 Principal area Caerphilly Ceremonial county Gwent Constituent country Wales Sovereign state United Kingdom Post town NEWPORT Postcode district NP11 Dialling code 01633 Police