Home Postcode finder NSW Muswellbrook Muswellbrook postcode NSW Muswellbrook is a locality in New South Wales covered by postcode 2333. Postcode 2333 State or territory New South Wales (NSW) Region Hunter Add a free Muswellbrook business listing More business listings in Muswellbrook Businesses in MuswellbrookBlackRoo Industries12 Enterprise Cres, Muswellbrook NSW, Australia · (02) 6543 0033Dunmore Lang Christian Community College30 Sowerby St · 02 65431114George & Matilda Eyecare2/51 Bridge St, Muswellbrook NSW 2333, Australia · (02) 6543 3143 Common questionsWhat is the postcode for Muswellbrook?Muswellbrook, NSW has the postcode 2333.What state is Muswellbrook in?Muswellbrook is in New South Wales (NSW).Does postcode 2333 cover more than one suburb?Yes. Postcode 2333 covers 14 localities, so the postcode alone does not identify Muswellbrook. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.