Home Postcode finder WA Moore River National Park Moore River National Park postcode WA Moore River National Park is a locality in Western Australia covered by postcode 6503. Postcode 6503 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Moore River National Park business listing Be the first listing in Moore River National Park Common questionsWhat is the postcode for Moore River National Park?Moore River National Park, WA has the postcode 6503.What state is Moore River National Park in?Moore River National Park is in Western Australia (WA).Does postcode 6503 cover more than one suburb?Yes. Postcode 6503 covers 20 localities, so the postcode alone does not identify Moore River National Park. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.