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