Home Postcode finder NSW March March postcode NSW March is a locality in New South Wales covered by postcode 2800. Postcode 2800 State or territory New South Wales (NSW) Region NSW Country West Add a free March business listing Be the first listing in March Common questionsWhat is the postcode for March?March, NSW has the postcode 2800.What state is March in?March is in New South Wales (NSW).Does postcode 2800 cover more than one suburb?Yes. Postcode 2800 covers 33 localities, so the postcode alone does not identify March. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.