Home Postcode finder NSW Marrickville South Marrickville South postcode NSW Marrickville South is a locality in New South Wales covered by postcode 2204. Postcode 2204 State or territory New South Wales (NSW) Region Alexandria Add a free Marrickville South business listing Be the first listing in Marrickville South Common questionsWhat is the postcode for Marrickville South?Marrickville South, NSW has the postcode 2204.What state is Marrickville South in?Marrickville South is in New South Wales (NSW).Does postcode 2204 cover more than one suburb?Yes. Postcode 2204 covers 3 localities, so the postcode alone does not identify Marrickville South. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.