Home Postcode finder WA Kulja Kulja postcode WA Kulja is a locality in Western Australia covered by postcode 6470. Postcode 6470 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Kulja business listing Be the first listing in Kulja Common questionsWhat is the postcode for Kulja?Kulja, WA has the postcode 6470.What state is Kulja in?Kulja is in Western Australia (WA).Does postcode 6470 cover more than one suburb?No. Postcode 6470 covers Kulja only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.