Home Postcodes by state NSW 2782 Postcode 2782 2782 is the postcode for Wentworth Falls, NSW. Localities with postcode 2782Wentworth FallsNSW Postcode 2782 State or territory New South Wales (NSW) Localities 1 Council area Blue Mountains Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2780 · Postcode 2783