Home Postcode finder NSW Marrangaroo Marrangaroo postcode NSW Marrangaroo is a locality in New South Wales covered by postcode 2790. Postcode 2790 State or territory New South Wales (NSW) Region NSW Country West Add a free Marrangaroo business listing Be the first listing in Marrangaroo Common questionsWhat is the postcode for Marrangaroo?Marrangaroo, NSW has the postcode 2790.What state is Marrangaroo in?Marrangaroo is in New South Wales (NSW).Does postcode 2790 cover more than one suburb?Yes. Postcode 2790 covers 40 localities, so the postcode alone does not identify Marrangaroo. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.