Home Postcode finder NSWDL Sugarloaf Sugarloaf postcode NSWDL Sugarloaf is a locality in New South Wales covered by postcode 2420. Postcode 2420 State or territory New South Wales (NSWDL) Region Hunter Add a free Sugarloaf business listing Be the first listing in Sugarloaf Common questionsWhat is the postcode for Sugarloaf?Sugarloaf, NSWDL has the postcode 2420.What state is Sugarloaf in?Sugarloaf is in New South Wales (NSWDL).Does postcode 2420 cover more than one suburb?Yes. Postcode 2420 covers 23 localities, so the postcode alone does not identify Sugarloaf. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.