hillsborough postcode nsw Home ›› Postcode Finder ›› NSW ›› Hillsborough Hillsborough local listingsThe suburb of Hillsborough is located in NSW and has a postcode of 2320. Free hillsborough business listing! 1Glendon SchoolWaratah Ave 02 49433479 View more business listings in hillsborough Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.