Home Postcode finder NSW Keinbah Keinbah postcode NSW Keinbah is a locality in New South Wales covered by postcode 2320. Postcode 2320 State or territory New South Wales (NSW) Region Hunter Add a free Keinbah business listing Be the first listing in Keinbah Common questionsWhat is the postcode for Keinbah?Keinbah, NSW has the postcode 2320.What state is Keinbah in?Keinbah is in New South Wales (NSW).Does postcode 2320 cover more than one suburb?Yes. Postcode 2320 covers 30 localities, so the postcode alone does not identify Keinbah. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.