Home Postcode finder NSW Tregear Tregear postcode NSW Tregear is a locality in New South Wales covered by postcode 2770. Postcode 2770 State or territory New South Wales (NSW) Region Nepean Add a free Tregear business listing More business listings in Tregear Businesses in TregearTregear Public SchoolWilkes Crescent · 02 96286301 Common questionsWhat is the postcode for Tregear?Tregear, NSW has the postcode 2770.What state is Tregear in?Tregear is in New South Wales (NSW).Does postcode 2770 cover more than one suburb?Yes. Postcode 2770 covers 13 localities, so the postcode alone does not identify Tregear. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.