Home Postcode finder NSW Cessnock Cessnock postcode NSW Cessnock is a locality in New South Wales covered by postcode 2325. Postcode 2325 State or territory New South Wales (NSW) Region Hunter Add a free Cessnock business listing More business listings in Cessnock Businesses in CessnockCessnock East Public School360 Old Maitland Rd · 02 49901549Cessnock High SchoolAberdare St · 02 49901977Cessnock Public SchoolRawson St · 02 49907322 Common questionsWhat is the postcode for Cessnock?Cessnock, NSW has the postcode 2325.What state is Cessnock in?Cessnock is in New South Wales (NSW).Does postcode 2325 cover more than one suburb?Yes. Postcode 2325 covers 27 localities, so the postcode alone does not identify Cessnock. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.