Home Postcode finder WA Coolgardie Coolgardie postcode WA Coolgardie is a locality in Western Australia covered by postcode 6429. Postcode 6429 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Coolgardie business listing More business listings in Coolgardie Businesses in CoolgardieChristian Aboriginal School85-93 Lindsay St · 08 90266115Coolgardie Primary School46 Shaw St · 08 90266014 Common questionsWhat is the postcode for Coolgardie?Coolgardie, WA has the postcode 6429.What state is Coolgardie in?Coolgardie is in Western Australia (WA).Does postcode 6429 cover more than one suburb?Yes. Postcode 6429 covers 8 localities, so the postcode alone does not identify Coolgardie. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.