Home Postcode finder NSW Giro Giro postcode NSW Giro is a locality in New South Wales covered by postcode 2422. Postcode 2422 State or territory New South Wales (NSW) Region Hunter Add a free Giro business listing Be the first listing in Giro Common questionsWhat is the postcode for Giro?Giro, NSW has the postcode 2422.What state is Giro in?Giro is in New South Wales (NSW).Does postcode 2422 cover more than one suburb?Yes. Postcode 2422 covers 45 localities, so the postcode alone does not identify Giro. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.