mayfield postcode nsw Home ›› Postcode Finder ›› NSW ›› Mayfield Mayfield local listingsThe suburb of Mayfield is located in NSW and has a postcode of 2787. Free mayfield business listing! 1Hunter Christian SchoolKerr St 02 496721112San Clemente High School78 Havelock St 02 496711003St Dominic's Centre for Hearing Impaired Children76 Havelock St 02 49681295 View more business listings in mayfield Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.