Lake Cargelligo is a town in the Central West region of New South Wales, Australia, on Lake Cargelligo. It is in Lachlan Shire. Its name is said t…Lake Cargelligo is a town in the Central West region of New South Wales, Australia, on Lake Cargelligo. It is in Lachlan Shire. Its name is said to be a corruption of the Aboriginal word kartjellakoo meaning 'he had a coolamon'. Alternatively it is derived from Wiradjuri and Ngiyambaa "gajal" for water container with suffix "lugu" for "her" or "his". At the 2021 census, Lake Cargelligo had a population of 1,430. It had an Indigenous population of 257 and other Australian-born population of 1,153.