Home Postcodes by state WA De Grey De Grey postcode WA De Grey is a locality in Western Australia covered by postcode 6722. Postcode 6722 State or territory Western Australia (WA) Region North West Suburbs Council area Port Hedland Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free De Grey business listing Be the first listing in De Grey Also in postcode 6722BoodarieWA 6722FinucaneWA 6722PippingarraWA 6722South HedlandWA 6722 Common questionsWhat is the postcode for De Grey?De Grey, WA has the postcode 6722.What state is De Grey in?De Grey is in Western Australia (WA).What council is De Grey in?De Grey is in the Port Hedland local government area.Does postcode 6722 cover more than one suburb?Yes. Postcode 6722 covers 5 localities, so the postcode alone does not identify De Grey. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.