Home Postcodes by state NSW 2529 Postcode 2529 2529 is the postcode for 7 localities in NSW: Blackbutt, Dunmore, Flinders, Oak Flats, Shell Cove, Shellharbour and 1 more. Localities with postcode 2529BlackbuttNSWDunmoreNSWFlindersNSWOak FlatsNSWShell CoveNSWShellharbourNSWShellharbour City CentreNSW Postcode 2529 State or territory New South Wales (NSW) Localities 7 Council area Shellharbour Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2528 · Postcode 2530