Home Postcode finder NSW Grogan Grogan postcode NSW Grogan is a locality in New South Wales covered by postcode 2666. Postcode 2666 State or territory New South Wales (NSW) Region Canberra Add a free Grogan business listing Be the first listing in Grogan Common questionsWhat is the postcode for Grogan?Grogan, NSW has the postcode 2666.What state is Grogan in?Grogan is in New South Wales (NSW).Does postcode 2666 cover more than one suburb?Yes. Postcode 2666 covers 14 localities, so the postcode alone does not identify Grogan. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.