ardlethan postcode nswst Home ›› Postcode Finder ›› NSWST ›› Ardlethan Ardlethan local listingsThe suburb of Ardlethan is located in NSW and has a postcode of 2665. Free ardlethan business listing! 1Ardlethan Central SchoolMithul St 02 69782046 View more business listings in ardlethan Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.