Home Postcode finder WA West Lamington West Lamington postcode WA West Lamington is a locality in Western Australia covered by postcode 6430. Postcode 6430 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free West Lamington business listing Be the first listing in West Lamington Common questionsWhat is the postcode for West Lamington?West Lamington, WA has the postcode 6430.What state is West Lamington in?West Lamington is in Western Australia (WA).Does postcode 6430 cover more than one suburb?Yes. Postcode 6430 covers 14 localities, so the postcode alone does not identify West Lamington. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.