Home Postcode finder WA St James St James postcode WA St James is a locality in Western Australia covered by postcode 6102. Postcode 6102 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free St James business listing More business listings in St James Businesses in St JamesMoryaa50 Palmerston St · 0468 852 153Santa Clara School91 Coolgardie St · 08 94514556 Common questionsWhat is the postcode for St James?St James, WA has the postcode 6102.What state is St James in?St James is in Western Australia (WA).Does postcode 6102 cover more than one suburb?Yes. Postcode 6102 covers 3 localities, so the postcode alone does not identify St James. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.