Home Postcode finder NSW Myrtle Mountain Myrtle Mountain postcode NSW Myrtle Mountain is a locality in New South Wales covered by postcode 2550. Postcode 2550 State or territory New South Wales (NSW) Region NSW Country West Add a free Myrtle Mountain business listing Be the first listing in Myrtle Mountain Common questionsWhat is the postcode for Myrtle Mountain?Myrtle Mountain, NSW has the postcode 2550.What state is Myrtle Mountain in?Myrtle Mountain is in New South Wales (NSW).Does postcode 2550 cover more than one suburb?Yes. Postcode 2550 covers 52 localities, so the postcode alone does not identify Myrtle Mountain. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.