Home Postcode finder NSW Westella Westella postcode NSW Westella is a locality in New South Wales covered by postcode 2831. Postcode 2831 State or territory New South Wales (NSW) Region NSW Country West Add a free Westella business listing Be the first listing in Westella Common questionsWhat is the postcode for Westella?Westella, NSW has the postcode 2831.What state is Westella in?Westella is in New South Wales (NSW).Does postcode 2831 cover more than one suburb?Yes. Postcode 2831 covers 23 localities, so the postcode alone does not identify Westella. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.