Home Postcode finder NSW Bolwarra Heights Bolwarra Heights postcode NSW Bolwarra Heights 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 Bolwarra Heights business listing Be the first listing in Bolwarra Heights Common questionsWhat is the postcode for Bolwarra Heights?Bolwarra Heights, NSW has the postcode 2320.What state is Bolwarra Heights in?Bolwarra Heights 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 Bolwarra Heights. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.