Home Postcode finder WA Marble Bar Marble Bar postcode WA Marble Bar is a locality in Western Australia covered by postcode 6760. Postcode 6760 State or territory Western Australia (WA) Region North West Suburbs Add a free Marble Bar business listing More business listings in Marble Bar Businesses in Marble BarMarble Bar Primary SchoolAugusta St · 08 91761037 Common questionsWhat is the postcode for Marble Bar?Marble Bar, WA has the postcode 6760.What state is Marble Bar in?Marble Bar is in Western Australia (WA).Does postcode 6760 cover more than one suburb?No. Postcode 6760 covers Marble Bar only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.