Home Postcode finder NSW Nelson Nelson postcode NSW Nelson is a locality in New South Wales covered by postcode 2550. Postcode 2550 State or territory New South Wales (NSW) Region NSW Country West Add a free Nelson business listing Be the first listing in Nelson Common questionsWhat is the postcode for Nelson?Nelson, NSW has the postcode 2550.What state is Nelson in?Nelson is in New South Wales (NSW).Does postcode 2550 cover more than one suburb?Yes. Postcode 2550 covers 52 localities, so the postcode alone does not identify Nelson. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.