Home Postcode finder NSW Marengo Marengo postcode NSW Marengo is a locality in New South Wales covered by postcode 2453. Postcode 2453 State or territory New South Wales (NSW) Region NSW North Coast Add a free Marengo business listing Be the first listing in Marengo Common questionsWhat is the postcode for Marengo?Marengo, NSW has the postcode 2453.What state is Marengo in?Marengo is in New South Wales (NSW).Does postcode 2453 cover more than one suburb?Yes. Postcode 2453 covers 20 localities, so the postcode alone does not identify Marengo. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.