Home Postcodes by state NSW 2233 Postcode 2233 2233 is the postcode for 5 localities in NSW: Engadine, Heathcote, Waterfall, Woronora Heights and Yarrawarrah. Localities with postcode 2233EngadineNSWHeathcoteNSWWaterfallNSWWoronora HeightsNSWYarrawarrahNSW Postcode 2233 State or territory New South Wales (NSW) Localities 5 Council area Sutherland Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2232 · Postcode 2234