Home Postcode finder WA Mount Hill Mount Hill postcode WA Mount Hill 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 Mount Hill business listing Be the first listing in Mount Hill Common questionsWhat is the postcode for Mount Hill?Mount Hill, WA has the postcode 6528.What state is Mount Hill in?Mount Hill 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 Mount Hill. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.