Home Postcode finder WA Neridup Neridup postcode WA Neridup is a locality in Western Australia covered by postcode 6450. Postcode 6450 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Neridup business listing Be the first listing in Neridup Common questionsWhat is the postcode for Neridup?Neridup, WA has the postcode 6450.What state is Neridup in?Neridup is in Western Australia (WA).Does postcode 6450 cover more than one suburb?Yes. Postcode 6450 covers 23 localities, so the postcode alone does not identify Neridup. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.