Home Postcode finder NSW Upper Dartbrook Upper Dartbrook postcode NSW Upper Dartbrook is a locality in New South Wales covered by postcode 2336. Postcode 2336 State or territory New South Wales (NSW) Region Hunter Add a free Upper Dartbrook business listing Be the first listing in Upper Dartbrook Common questionsWhat is the postcode for Upper Dartbrook?Upper Dartbrook, NSW has the postcode 2336.What state is Upper Dartbrook in?Upper Dartbrook is in New South Wales (NSW).Does postcode 2336 cover more than one suburb?Yes. Postcode 2336 covers 8 localities, so the postcode alone does not identify Upper Dartbrook. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.