Home Postcode finder NSW Mitchells Island Mitchells Island postcode NSW Mitchells Island is a locality in New South Wales covered by postcode 2430. Postcode 2430 State or territory New South Wales (NSW) Region Hunter Add a free Mitchells Island business listing More business listings in Mitchells Island Businesses in Mitchells IslandMitchells Island Public School1222 Manning Point Rd · 02 65532623 Common questionsWhat is the postcode for Mitchells Island?Mitchells Island, NSW has the postcode 2430.What state is Mitchells Island in?Mitchells Island is in New South Wales (NSW).Does postcode 2430 cover more than one suburb?Yes. Postcode 2430 covers 39 localities, so the postcode alone does not identify Mitchells Island. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.