Home Postcode finder NSWDL Ardlethan Ardlethan postcode NSWDL Ardlethan is a locality in New South Wales covered by postcode 2665. Postcode 2665 State or territory New South Wales (NSWDL) Region Canberra Add a free Ardlethan business listing More business listings in Ardlethan Businesses in ArdlethanArdlethan Central SchoolMithul St · 02 69782046 Common questionsWhat is the postcode for Ardlethan?Ardlethan, NSWDL has the postcode 2665.What state is Ardlethan in?Ardlethan is in New South Wales (NSWDL).Does postcode 2665 cover more than one suburb?Yes. Postcode 2665 covers 12 localities, so the postcode alone does not identify Ardlethan. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.