Home Postcode finder NSW Yalwal Yalwal postcode NSW Yalwal 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 Yalwal business listing Be the first listing in Yalwal Common questionsWhat is the postcode for Yalwal?Yalwal, NSW has the postcode 2540.What state is Yalwal in?Yalwal 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 Yalwal. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.