Home Postcode finder NSW Linden Linden postcode NSW Linden is a locality in New South Wales covered by postcode 2778. Postcode 2778 State or territory New South Wales (NSW) Region Nepean Add a free Linden business listing Be the first listing in Linden Common questionsWhat is the postcode for Linden?Linden, NSW has the postcode 2778.What state is Linden in?Linden is in New South Wales (NSW).Does postcode 2778 cover more than one suburb?Yes. Postcode 2778 covers 2 localities, so the postcode alone does not identify Linden. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.