Home Postcode finder WA Toolibin Toolibin postcode WA Toolibin is a locality in Western Australia covered by postcode 6312. Postcode 6312 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Toolibin business listing Be the first listing in Toolibin Common questionsWhat is the postcode for Toolibin?Toolibin, WA has the postcode 6312.What state is Toolibin in?Toolibin is in Western Australia (WA).Does postcode 6312 cover more than one suburb?Yes. Postcode 6312 covers 9 localities, so the postcode alone does not identify Toolibin. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.