Home Postcode finder NSW Harrington Harrington postcode NSW Harrington is a locality in New South Wales covered by postcode 2427. Postcode 2427 State or territory New South Wales (NSW) Region Hunter Add a free Harrington business listing More business listings in Harrington Businesses in HarringtonBIG4 Colonial Holiday Park716 Harrington Road, Harrington NSW, Australia · +61 2 6556 3312Harrington Public School37 High St · 02 65561267 Common questionsWhat is the postcode for Harrington?Harrington, NSW has the postcode 2427.What state is Harrington in?Harrington is in New South Wales (NSW).Does postcode 2427 cover more than one suburb?Yes. Postcode 2427 covers 2 localities, so the postcode alone does not identify Harrington. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.