randwick postcode nsw Home ›› Postcode Finder ›› NSW ›› Randwick Randwick local listingsThe suburb of Randwick is located in NSW and has a postcode of 2031. Free randwick business listing! 1The Open High School78 Avoca St 02 938148012Randwick Girls High SchoolBarker St 02 939832333Brigidine College RandwickAoelia St 02 93986710 View more business listings in randwick Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.