Home Postcode finder NSW Maryvale Maryvale postcode NSW Maryvale is a locality in New South Wales covered by postcode 2820. Postcode 2820 State or territory New South Wales (NSW) Region NSW Country West Add a free Maryvale business listing Be the first listing in Maryvale Common questionsWhat is the postcode for Maryvale?Maryvale, NSW has the postcode 2820.What state is Maryvale in?Maryvale is in New South Wales (NSW).Does postcode 2820 cover more than one suburb?Yes. Postcode 2820 covers 25 localities, so the postcode alone does not identify Maryvale. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.