Home Postcode finder NSW Merrygoen Merrygoen postcode NSW Merrygoen is a locality in New South Wales covered by postcode 2831. Postcode 2831 State or territory New South Wales (NSW) Region NSW Country West Add a free Merrygoen business listing Be the first listing in Merrygoen Common questionsWhat is the postcode for Merrygoen?Merrygoen, NSW has the postcode 2831.What state is Merrygoen in?Merrygoen is in New South Wales (NSW).Does postcode 2831 cover more than one suburb?Yes. Postcode 2831 covers 23 localities, so the postcode alone does not identify Merrygoen. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.