Home Postcode finder WA Eucla Eucla postcode WA Eucla is a locality in Western Australia covered by postcode 6443. Postcode 6443 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Eucla business listing Be the first listing in Eucla Common questionsWhat is the postcode for Eucla?Eucla, WA has the postcode 6443.What state is Eucla in?Eucla is in Western Australia (WA).Does postcode 6443 cover more than one suburb?Yes. Postcode 6443 covers 11 localities, so the postcode alone does not identify Eucla. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.