Home Postcode finder WA Nambung Nambung postcode WA Nambung is a locality in Western Australia covered by postcode 6521. Postcode 6521 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Nambung business listing Be the first listing in Nambung Common questionsWhat is the postcode for Nambung?Nambung, WA has the postcode 6521.What state is Nambung in?Nambung is in Western Australia (WA).Does postcode 6521 cover more than one suburb?Yes. Postcode 6521 covers 5 localities, so the postcode alone does not identify Nambung. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.