Home Postcode finder WA Perth Gpo Perth Gpo postcode WA Perth Gpo is a locality in Western Australia covered by postcode 6000. Postcode 6000 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Perth Gpo business listing Be the first listing in Perth Gpo Common questionsWhat is the postcode for Perth Gpo?Perth Gpo, WA has the postcode 6000.What state is Perth Gpo in?Perth Gpo is in Western Australia (WA).Does postcode 6000 cover more than one suburb?Yes. Postcode 6000 covers 3 localities, so the postcode alone does not identify Perth Gpo. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.