Home Postcode finder WA Forest Hill Forest Hill postcode WA Forest Hill is a locality in Western Australia covered by postcode 6324. Postcode 6324 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Forest Hill business listing Be the first listing in Forest Hill Common questionsWhat is the postcode for Forest Hill?Forest Hill, WA has the postcode 6324.What state is Forest Hill in?Forest Hill is in Western Australia (WA).Does postcode 6324 cover more than one suburb?Yes. Postcode 6324 covers 8 localities, so the postcode alone does not identify Forest Hill. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.