Home Postcode finder NSW Cullerin Cullerin postcode NSW Cullerin is a locality in New South Wales covered by postcode 2581. Postcode 2581 State or territory New South Wales (NSW) Region Canberra Add a free Cullerin business listing Be the first listing in Cullerin Common questionsWhat is the postcode for Cullerin?Cullerin, NSW has the postcode 2581.What state is Cullerin in?Cullerin is in New South Wales (NSW).Does postcode 2581 cover more than one suburb?Yes. Postcode 2581 covers 17 localities, so the postcode alone does not identify Cullerin. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.