Home Postcodes by state NSW 2191 Postcode 2191 2191 is the postcode for Belfield, NSW. Localities with postcode 2191BelfieldNSW Postcode 2191 State or territory New South Wales (NSW) Localities 1 Council area Mainly Canterbury-Bankstown, partly Strathfield Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2190 · Postcode 2192