Home Postcode finder NSW Chichester Chichester postcode NSW Chichester is a locality in New South Wales covered by postcode 2420. Postcode 2420 State or territory New South Wales (NSW) Region Hunter Add a free Chichester business listing Be the first listing in Chichester Common questionsWhat is the postcode for Chichester?Chichester, NSW has the postcode 2420.What state is Chichester in?Chichester is in New South Wales (NSW).Does postcode 2420 cover more than one suburb?Yes. Postcode 2420 covers 23 localities, so the postcode alone does not identify Chichester. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.