Lockhart is a town in the Riverina Region of New South Wales, Australia. It is the location of the Lockhart Shire Council offices. At the 2016 cens…Lockhart is a town in the Riverina Region of New South Wales, Australia. It is the location of the Lockhart Shire Council offices. At the 2016 census, Lockhart had a population of 818 people. Lockhart was named after C.G.N. Lockhart – a commissioner for Crown Lands in the Murrumbidgee River area in the 1850s. It was originally known as Greens Gunyah, and renamed Lockhart in 1897. Greens Gunyah was so named because a Mr Green was the earliest settler and had a grog shop on the Urana–Wagga Wagga stagecoach route.