Home Postcode finder NSW Middlingbank Middlingbank postcode NSW Middlingbank is a locality in New South Wales covered by postcode 2630. Postcode 2630 State or territory New South Wales (NSW) Region Canberra Add a free Middlingbank business listing Be the first listing in Middlingbank Common questionsWhat is the postcode for Middlingbank?Middlingbank, NSW has the postcode 2630.What state is Middlingbank in?Middlingbank is in New South Wales (NSW).Does postcode 2630 cover more than one suburb?Yes. Postcode 2630 covers 39 localities, so the postcode alone does not identify Middlingbank. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.