Home Postcode finder NSWRV Mount Cooper Mount Cooper postcode NSWRV Mount Cooper is a locality in New South Wales covered by postcode 2631. Postcode 2631 State or territory New South Wales (NSWRV) Region Canberra Add a free Mount Cooper business listing Be the first listing in Mount Cooper Common questionsWhat is the postcode for Mount Cooper?Mount Cooper, NSWRV has the postcode 2631.What state is Mount Cooper in?Mount Cooper is in New South Wales (NSWRV).Does postcode 2631 cover more than one suburb?Yes. Postcode 2631 covers 12 localities, so the postcode alone does not identify Mount Cooper. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.