Home Postcode finder NSW Kosciuszko Kosciuszko postcode NSW Kosciuszko is a locality in New South Wales covered by postcode 2627. Postcode 2627 State or territory New South Wales (NSW) Region Canberra Add a free Kosciuszko business listing Be the first listing in Kosciuszko Common questionsWhat is the postcode for Kosciuszko?Kosciuszko, NSW has the postcode 2627.What state is Kosciuszko in?Kosciuszko is in New South Wales (NSW).Does postcode 2627 cover more than one suburb?Yes. Postcode 2627 covers 10 localities, so the postcode alone does not identify Kosciuszko. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.