Home Postcode finder WA Marchagee Marchagee postcode WA Marchagee is a locality in Western Australia covered by postcode 6515. Postcode 6515 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Marchagee business listing Be the first listing in Marchagee Common questionsWhat is the postcode for Marchagee?Marchagee, WA has the postcode 6515.What state is Marchagee in?Marchagee is in Western Australia (WA).Does postcode 6515 cover more than one suburb?Yes. Postcode 6515 covers 4 localities, so the postcode alone does not identify Marchagee. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.