Home Postcode finder NSW Wermatong Wermatong postcode NSW Wermatong is a locality in New South Wales covered by postcode 2720. Postcode 2720 State or territory New South Wales (NSW) Region Canberra Add a free Wermatong business listing Be the first listing in Wermatong Common questionsWhat is the postcode for Wermatong?Wermatong, NSW has the postcode 2720.What state is Wermatong in?Wermatong is in New South Wales (NSW).Does postcode 2720 cover more than one suburb?Yes. Postcode 2720 covers 28 localities, so the postcode alone does not identify Wermatong. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.