mayfield-north postcode nswst Home ›› Postcode Finder ›› NSWST ›› Mayfield-North Mayfield North local listingsThe suburb of Mayfield North is located in NSW and has a postcode of 2304. Free mayfield north business listing! Get the first free listing in mayfield north! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.