Home Postcode finder WA Piccadilly Piccadilly postcode WA Piccadilly is a locality in Western Australia covered by postcode 6430. Postcode 6430 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Piccadilly business listing Be the first listing in Piccadilly Common questionsWhat is the postcode for Piccadilly?Piccadilly, WA has the postcode 6430.What state is Piccadilly in?Piccadilly is in Western Australia (WA).Does postcode 6430 cover more than one suburb?Yes. Postcode 6430 covers 14 localities, so the postcode alone does not identify Piccadilly. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.