Home Postcode finder NSW Carroll Carroll postcode NSW Carroll is a locality in New South Wales covered by postcode 2340. Postcode 2340 State or territory New South Wales (NSW) Region NSW North Coast Add a free Carroll business listing More business listings in Carroll Businesses in CarrollCarroll Public SchoolDavid St · 02 67431722 Common questionsWhat is the postcode for Carroll?Carroll, NSW has the postcode 2340.What state is Carroll in?Carroll is in New South Wales (NSW).Does postcode 2340 cover more than one suburb?Yes. Postcode 2340 covers 39 localities, so the postcode alone does not identify Carroll. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.