Home Postcode finder NSWDL Shannon Brook Shannon Brook postcode NSWDL Shannon Brook is a locality in New South Wales covered by postcode 2470. Postcode 2470 State or territory New South Wales (NSWDL) Region NSW North Coast Add a free Shannon Brook business listing Be the first listing in Shannon Brook Common questionsWhat is the postcode for Shannon Brook?Shannon Brook, NSWDL has the postcode 2470.What state is Shannon Brook in?Shannon Brook is in New South Wales (NSWDL).Does postcode 2470 cover more than one suburb?Yes. Postcode 2470 covers 25 localities, so the postcode alone does not identify Shannon Brook. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.