Home Postcode finder NSW Biddon Biddon postcode NSW Biddon is a locality in New South Wales covered by postcode 2827. Postcode 2827 State or territory New South Wales (NSW) Region NSW Country West Add a free Biddon business listing Be the first listing in Biddon Common questionsWhat is the postcode for Biddon?Biddon, NSW has the postcode 2827.What state is Biddon in?Biddon is in New South Wales (NSW).Does postcode 2827 cover more than one suburb?Yes. Postcode 2827 covers 7 localities, so the postcode alone does not identify Biddon. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.