Home Postcodes by state NSW 2177 Postcode 2177 2177 is the postcode for 2 localities in NSW: Bonnyrigg and Bonnyrigg Heights. Localities with postcode 2177BonnyriggNSWBonnyrigg HeightsNSW Postcode 2177 State or territory New South Wales (NSW) Localities 2 Council area Fairfield Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2176 · Postcode 2178