Home Postcode finder NSWDL Shallow Bay Shallow Bay postcode NSWDL Shallow Bay is a locality in New South Wales covered by postcode 2428. Postcode 2428 State or territory New South Wales (NSWDL) Region Hunter Add a free Shallow Bay business listing Be the first listing in Shallow Bay Common questionsWhat is the postcode for Shallow Bay?Shallow Bay, NSWDL has the postcode 2428.What state is Shallow Bay in?Shallow Bay is in New South Wales (NSWDL).Does postcode 2428 cover more than one suburb?Yes. Postcode 2428 covers 21 localities, so the postcode alone does not identify Shallow Bay. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.