Gwent      About your Area   Abercarn Abercarn shown within the United Kingdom Population 4,793 (2001 census [1] ) OS grid reference ST216947 Principal area Caerphilly Ceremonial county Gwent Constituent country Wales Sovereign state United Kingdom Post town NEWPORT Postcode district NP11 Dialling code 01495 Police Gwent Fire South Wales Ambulance Welsh European Parliament Wales UK Parliament Islwyn List of