Home Postcode finder NSW Holsworthy Holsworthy postcode NSW Holsworthy is a locality in New South Wales covered by postcode 2173. Postcode 2173 State or territory New South Wales (NSW) Region Ingleburn Add a free Holsworthy business listing More business listings in Holsworthy Businesses in HolsworthyHolsworthy Childcare Centre105 Derna RoadHolsworthy High SchoolHuon Crescent · 02 98252888Holsworthy Public SchoolInfantry Pde · 02 98251479 Common questionsWhat is the postcode for Holsworthy?Holsworthy, NSW has the postcode 2173.What state is Holsworthy in?Holsworthy is in New South Wales (NSW).Does postcode 2173 cover more than one suburb?Yes. Postcode 2173 covers 2 localities, so the postcode alone does not identify Holsworthy. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.