Home Postcode finder NSW Mcmahons Reef Mcmahons Reef postcode NSW Mcmahons Reef is a locality in New South Wales covered by postcode 2587. Postcode 2587 State or territory New South Wales (NSW) Region Canberra Add a free Mcmahons Reef business listing Be the first listing in Mcmahons Reef Common questionsWhat is the postcode for Mcmahons Reef?Mcmahons Reef, NSW has the postcode 2587.What state is Mcmahons Reef in?Mcmahons Reef is in New South Wales (NSW).Does postcode 2587 cover more than one suburb?Yes. Postcode 2587 covers 6 localities, so the postcode alone does not identify Mcmahons Reef. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.