Home Postcode finder NSW Birrong Birrong postcode NSW Birrong is a locality in New South Wales covered by postcode 2143. Postcode 2143 State or territory New South Wales (NSW) Region Leightonfield Add a free Birrong business listing More business listings in Birrong Businesses in BirrongBirrong Boys High SchoolRodd St · 02 96445200Birrong Girls High SchoolCooper Rd · 02 96445057Birrong Public School130 Auburn Rd · 02 96443078 Common questionsWhat is the postcode for Birrong?Birrong, NSW has the postcode 2143.What state is Birrong in?Birrong is in New South Wales (NSW).Does postcode 2143 cover more than one suburb?Yes. Postcode 2143 covers 3 localities, so the postcode alone does not identify Birrong. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.