Home Postcode finder NSW Cowan Cowan postcode NSW Cowan is a locality in New South Wales covered by postcode 2081. Postcode 2081 State or territory New South Wales (NSW) Region Pymble Add a free Cowan business listing More business listings in Cowan Businesses in CowanCowan Public SchoolChandler Ave · 02 94561065 Common questionsWhat is the postcode for Cowan?Cowan, NSW has the postcode 2081.What state is Cowan in?Cowan is in New South Wales (NSW).Does postcode 2081 cover more than one suburb?Yes. Postcode 2081 covers 2 localities, so the postcode alone does not identify Cowan. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.