Home Postcode finder NSW Mungo Brush Mungo Brush postcode NSW Mungo Brush is a locality in New South Wales covered by postcode 2423. Postcode 2423 State or territory New South Wales (NSW) Region Hunter Add a free Mungo Brush business listing Be the first listing in Mungo Brush Common questionsWhat is the postcode for Mungo Brush?Mungo Brush, NSW has the postcode 2423.What state is Mungo Brush in?Mungo Brush is in New South Wales (NSW).Does postcode 2423 cover more than one suburb?Yes. Postcode 2423 covers 20 localities, so the postcode alone does not identify Mungo Brush. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.