Home Postcode finder NSW Renwick Renwick postcode NSW Renwick is a locality in New South Wales covered by postcode 2575. Postcode 2575 State or territory New South Wales (NSW) Region Ingleburn Add a free Renwick business listing Be the first listing in Renwick Common questionsWhat is the postcode for Renwick?Renwick, NSW has the postcode 2575.What state is Renwick in?Renwick is in New South Wales (NSW).Does postcode 2575 cover more than one suburb?Yes. Postcode 2575 covers 19 localities, so the postcode alone does not identify Renwick. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.