Home Postcode finder NSW Collendina Collendina postcode NSW Collendina is a locality in New South Wales covered by postcode 2646. Postcode 2646 State or territory New South Wales (NSW) Region Canberra Add a free Collendina business listing Be the first listing in Collendina Common questionsWhat is the postcode for Collendina?Collendina, NSW has the postcode 2646.What state is Collendina in?Collendina is in New South Wales (NSW).Does postcode 2646 cover more than one suburb?Yes. Postcode 2646 covers 15 localities, so the postcode alone does not identify Collendina. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.