Home Postcode finder NSW Black Hollow Black Hollow postcode NSW Black Hollow is a locality in New South Wales covered by postcode 2828. Postcode 2828 State or territory New South Wales (NSW) Region NSW Country West Add a free Black Hollow business listing Be the first listing in Black Hollow Common questionsWhat is the postcode for Black Hollow?Black Hollow, NSW has the postcode 2828.What state is Black Hollow in?Black Hollow is in New South Wales (NSW).Does postcode 2828 cover more than one suburb?Yes. Postcode 2828 covers 7 localities, so the postcode alone does not identify Black Hollow. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.