Home Postcode finder NSW Ettrema Ettrema postcode NSW Ettrema is a locality in New South Wales covered by postcode 2540. Postcode 2540 State or territory New South Wales (NSW) Region NSW Country West Add a free Ettrema business listing Be the first listing in Ettrema Common questionsWhat is the postcode for Ettrema?Ettrema, NSW has the postcode 2540.What state is Ettrema in?Ettrema is in New South Wales (NSW).Does postcode 2540 cover more than one suburb?Yes. Postcode 2540 covers 68 localities, so the postcode alone does not identify Ettrema. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.