Home Postcode finder NSW Nullica Nullica postcode NSW Nullica 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 Nullica business listing Be the first listing in Nullica Common questionsWhat is the postcode for Nullica?Nullica, NSW has the postcode 2551.What state is Nullica in?Nullica 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 Nullica. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.