holsworthy postcode nsw Home ›› Postcode Finder ›› NSW ›› Holsworthy Holsworthy local listingsThe suburb of Holsworthy is located in NSW and has a postcode of 2173. Free holsworthy business listing! 1Holsworthy High SchoolHuon Crescent 02 982528882St Christopher's SchoolHeathcote Rd 02 982532513Holsworthy Public SchoolInfantry Pde 02 98251479 View more business listings in holsworthy Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.