Home Postcode finder NSW Brobenah Brobenah postcode NSW Brobenah is a locality in New South Wales covered by postcode 2705. Postcode 2705 State or territory New South Wales (NSW) Region Canberra Add a free Brobenah business listing Be the first listing in Brobenah Common questionsWhat is the postcode for Brobenah?Brobenah, NSW has the postcode 2705.What state is Brobenah in?Brobenah is in New South Wales (NSW).Does postcode 2705 cover more than one suburb?Yes. Postcode 2705 covers 8 localities, so the postcode alone does not identify Brobenah. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.