Home Postcode finder WA Beechina Beechina postcode WA Beechina is a locality in Western Australia covered by postcode 6556. Postcode 6556 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Beechina business listing Be the first listing in Beechina Common questionsWhat is the postcode for Beechina?Beechina, WA has the postcode 6556.What state is Beechina in?Beechina is in Western Australia (WA).Does postcode 6556 cover more than one suburb?Yes. Postcode 6556 covers 5 localities, so the postcode alone does not identify Beechina. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.