Home Postcode finder NSW Monash Park Monash Park postcode NSW Monash Park is a locality in New South Wales covered by postcode 2111. Postcode 2111 State or territory New South Wales (NSW) Region St Leonards Add a free Monash Park business listing Be the first listing in Monash Park Common questionsWhat is the postcode for Monash Park?Monash Park, NSW has the postcode 2111.What state is Monash Park in?Monash Park is in New South Wales (NSW).Does postcode 2111 cover more than one suburb?Yes. Postcode 2111 covers 7 localities, so the postcode alone does not identify Monash Park. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.