Lyndhurst is a small village in New South Wales, Australia in Blayney Shire. It is 4 kilometres west of Mandurama or about 269 km west of …Lyndhurst is a small village in New South Wales, Australia in Blayney Shire. It is 4 kilometres west of Mandurama or about 269 km west of Sydney and 63 km south-west of Bathurst just off the Mid-Western Highway New South Wales. Once serving as the major centre for basic goods and needs to the nearby Junction Reefs goldfields. At the 2016 census, Lyndhurst had a population of 267 people.