Home Postcodes by state WA 6760 Postcode 6760 6760 is the postcode for Marble Bar, WA. Localities with postcode 6760Marble BarWA Postcode 6760 State or territory Western Australia (WA) Localities 1 Council area East Pilbara Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6758 · Postcode 6762