Home Postcode finder NSWRV Catherine Hill Bay Catherine Hill Bay postcode NSWRV Catherine Hill Bay is a locality in New South Wales covered by postcode 2281. Postcode 2281 State or territory New South Wales (NSWRV) Region Hunter Add a free Catherine Hill Bay business listing Be the first listing in Catherine Hill Bay Common questionsWhat is the postcode for Catherine Hill Bay?Catherine Hill Bay, NSWRV has the postcode 2281.What state is Catherine Hill Bay in?Catherine Hill Bay is in New South Wales (NSWRV).Does postcode 2281 cover more than one suburb?Yes. Postcode 2281 covers 11 localities, so the postcode alone does not identify Catherine Hill Bay. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.