prestons postcode nsw Home ›› Postcode Finder ›› NSW ›› Prestons Prestons local listingsThe suburb of Prestons is located in NSW and has a postcode of 2170. Free prestons business listing! 1Sule College163 Kurrajong Rd 02 960833112William Carey Christian SchoolBumbera St 02 960821983St Catherine of Siena Primary SchoolDalmeny Drive 02 96073888 View more business listings in prestons Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.