Aboriginal occupation of the area is thought to date back at least 15,000 years. Willandra Creek formed a rough boundary between the
Wiradjuri people to the south and the Wongaibon people to the north. Europeans first settled the area in the 1830s. Initially this settlement was low key pastoral activity and allowed the Aboriginal people to largely continue their traditional way of living. However, during the 1870s and early 1880s extensive programs of fencing, buildings and dam construction took place as the first phase of European permanent settlement occurred. In 1894 Willandra passed into the ownership of the London Bank of Melbourne, after the entrepreneurial empire of its previous owners, the Whittingham Brothers, collapsed in the
1890s depression. Under the management of Arthur and Frank Laird during the subsequent period, Willandra became a renowned sheep property, winning many prizes for the quality of its Merino flock. In 1912 Willandra was sold to the Vickery Partnership and was struck by drought for a period of two years immediately afterward. By 1914 the size of the flock had dropped to 10,000 sheep with larger numbers of stock having been moved from the property as the dry progressed. The Company reached its peak as a stud property in the 1920s and 1930s. Shearing numbers reached 96,943 in 1931 for a total of 3,243
bales of wool and the property area expanded to . A new homestead (still standing and available for accommodation) was added in 1918, along with numerous other buildings over the years. The property boasted a tennis court, a croquet lawn and orchards and was, and remains, a remarkable oasis in a typically dry and dusty landscape. Despite high wool prices in the 1950s, Willandra had begun its decline as a prominent pastoral property, which had been exacerbated by a prolonged drought after the Second World War. In 1960 the New Zealand and Australian Land Company bought Willandra and its area shrank to . However, prosperity returned for a time and the property had up to 22 staff. In 1969
Dalgety plc purchased the property, but declined to renew the pastoral leases when they expired in 1971. With the expiration of the leases, the NSW Government resumed the Crown Land grants and gazetted Willandra National Park in 1972. Subsequently, the reserve has been managed by the
NSW National Parks & Wildlife Service. A major restoration program in the late 1990s restored the buildings to their former glory and a number of them are available for public accommodation. == Heritage listings ==