Home Postcode finder NSWRV Mount Tomah Mount Tomah postcode NSWRV Mount Tomah is a locality in New South Wales covered by postcode 2758. Postcode 2758 State or territory New South Wales (NSWRV) Region Nepean Add a free Mount Tomah business listing Be the first listing in Mount Tomah Common questionsWhat is the postcode for Mount Tomah?Mount Tomah, NSWRV has the postcode 2758.What state is Mount Tomah in?Mount Tomah is in New South Wales (NSWRV).Does postcode 2758 cover more than one suburb?Yes. Postcode 2758 covers 11 localities, so the postcode alone does not identify Mount Tomah. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.