Home Postcodes by state NSW 2077 Postcode 2077 2077 is the postcode for 4 localities in NSW: Asquith, Hornsby, Hornsby Heights and Waitara. Localities with postcode 2077AsquithNSWHornsbyNSWHornsby HeightsNSWWaitaraNSW Postcode 2077 State or territory New South Wales (NSW) Localities 4 Council area Hornsby Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2076 · Postcode 2079