adamstown postcode nsw Home ›› Postcode Finder ›› NSW ›› Adamstown Adamstown local listingsThe suburb of Adamstown is located in NSW and has a postcode of 2289. Free adamstown business listing! 1Kotara High SchoolLexington Pde 02 494330442St Pius X High SchoolPark Ave 02 495710323Adamstown Public School1a Bryant St 02 49571114 View more business listings in adamstown Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.