Home Postcodes by state NSW 2342 Postcode 2342 2342 is the postcode for 2 localities in NSW: Currabubula and Piallaway. Localities with postcode 2342CurrabubulaNSWPiallawayNSW Postcode 2342 State or territory New South Wales (NSW) Localities 2 Council area Liverpool Plains; Mainly Gunnedah, partly Liverpool Plains Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2341 · Postcode 2343