Home Postcode finder WA South Greenough South Greenough postcode WA South Greenough is a locality in Western Australia covered by postcode 6528. Postcode 6528 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free South Greenough business listing Be the first listing in South Greenough Common questionsWhat is the postcode for South Greenough?South Greenough, WA has the postcode 6528.What state is South Greenough in?South Greenough is in Western Australia (WA).Does postcode 6528 cover more than one suburb?Yes. Postcode 6528 covers 3 localities, so the postcode alone does not identify South Greenough. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.