Home Postcode finder WA Gabalong Gabalong postcode WA Gabalong is a locality in Western Australia covered by postcode 6574. Postcode 6574 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Gabalong business listing Be the first listing in Gabalong Common questionsWhat is the postcode for Gabalong?Gabalong, WA has the postcode 6574.What state is Gabalong in?Gabalong is in Western Australia (WA).Does postcode 6574 cover more than one suburb?Yes. Postcode 6574 covers 2 localities, so the postcode alone does not identify Gabalong. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.