Hillston is a township in western New South Wales, Australia, in Carrathool Shire, on the banks of the Lachlan River. It was founded in 1863 and …Hillston is a township in western New South Wales, Australia, in Carrathool Shire, on the banks of the Lachlan River. It was founded in 1863 and at the 2021 census had a population of 1,547. John Oxley and his exploration party were the first European visitors to the Hillston district, in 1817. Oxley wrote in his journal: "country uninhabitable and useless for all purposes of civilised man".