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