Home Postcode finder NSW Mulloon Mulloon postcode NSW Mulloon is a locality in New South Wales covered by postcode 2622. Postcode 2622 State or territory New South Wales (NSW) Region Canberra Add a free Mulloon business listing Be the first listing in Mulloon Common questionsWhat is the postcode for Mulloon?Mulloon, NSW has the postcode 2622.What state is Mulloon in?Mulloon is in New South Wales (NSW).Does postcode 2622 cover more than one suburb?Yes. Postcode 2622 covers 50 localities, so the postcode alone does not identify Mulloon. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.