newtown postcode nsw Home ›› Postcode Finder ›› NSW ›› Newtown Newtown local listingsThe suburb of Newtown is located in NSW and has a postcode of 2042. Free newtown business listing! 1Newtown High School of Performing Arts344-350 King St 02 951915442The Athena School26 Oxford St 02 955700223Australia Street Infants School229 Australia St 02 95575377 View more business listings in newtown Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.