Home Postcode finder NSW Reids Flat Reids Flat postcode NSW Reids Flat is a locality in New South Wales covered by postcode 2586. Postcode 2586 State or territory New South Wales (NSW) Region Canberra Add a free Reids Flat business listing Be the first listing in Reids Flat Common questionsWhat is the postcode for Reids Flat?Reids Flat, NSW has the postcode 2586.What state is Reids Flat in?Reids Flat is in New South Wales (NSW).Does postcode 2586 cover more than one suburb?Yes. Postcode 2586 covers 7 localities, so the postcode alone does not identify Reids Flat. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.