Home Postcode finder WA Moonies Hill Moonies Hill postcode WA Moonies Hill is a locality in Western Australia covered by postcode 6320. Postcode 6320 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Moonies Hill business listing Be the first listing in Moonies Hill Common questionsWhat is the postcode for Moonies Hill?Moonies Hill, WA has the postcode 6320.What state is Moonies Hill in?Moonies Hill is in Western Australia (WA).Does postcode 6320 cover more than one suburb?Yes. Postcode 6320 covers 7 localities, so the postcode alone does not identify Moonies Hill. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.