Home Postcode finder WA Higginsville Higginsville postcode WA Higginsville 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 Higginsville business listing Be the first listing in Higginsville Common questionsWhat is the postcode for Higginsville?Higginsville, WA has the postcode 6443.What state is Higginsville in?Higginsville 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 Higginsville. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.