Home Postcode finder NSW Deua Deua postcode NSW Deua is a locality in New South Wales covered by postcode 2537. Postcode 2537 State or territory New South Wales (NSW) Region NSW Country West Add a free Deua business listing Be the first listing in Deua Common questionsWhat is the postcode for Deua?Deua, NSW has the postcode 2537.What state is Deua in?Deua is in New South Wales (NSW).Does postcode 2537 cover more than one suburb?Yes. Postcode 2537 covers 17 localities, so the postcode alone does not identify Deua. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.