Home Postcode finder WA Wedgefield Wedgefield postcode WA Wedgefield is a locality in Western Australia covered by postcode 6721. Postcode 6721 State or territory Western Australia (WA) Region North West Suburbs Add a free Wedgefield business listing Be the first listing in Wedgefield Common questionsWhat is the postcode for Wedgefield?Wedgefield, WA has the postcode 6721.What state is Wedgefield in?Wedgefield is in Western Australia (WA).Does postcode 6721 cover more than one suburb?Yes. Postcode 6721 covers 8 localities, so the postcode alone does not identify Wedgefield. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.