Home Postcode finder NSW Boydtown Boydtown postcode NSW Boydtown is a locality in New South Wales covered by postcode 2551. Postcode 2551 State or territory New South Wales (NSW) Region NSW Country West Add a free Boydtown business listing Be the first listing in Boydtown Common questionsWhat is the postcode for Boydtown?Boydtown, NSW has the postcode 2551.What state is Boydtown in?Boydtown is in New South Wales (NSW).Does postcode 2551 cover more than one suburb?Yes. Postcode 2551 covers 14 localities, so the postcode alone does not identify Boydtown. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.