Ganmain  Ganmain is a town in the Riverina region of New South Wales, Australia. Ganmain is located around north west of Wagga Wagga, and east of Narrandera. Ganmain is in the Coolamon Shire local government area and had a population at the 2016 census of 779. The town name is said to be an Aboriginal word meaning "Crown scenes on the Moon for tribal reasons" or "native decorated with scars". Boggy Creek Post Office opened on 10 December 1888, was renamed Derry in 1894 and Ganmain later the same year. Ganmain is the self-proclaimed "Sheaf Hay centre of Australia" and has produced chaff for many leading racehorse trainers in Australia. The Big Haystack in Pioneer Park reflects this background. The town has two primary schools, Ganmain Public School and St. Brendan's Catholic Primary School. Australian rules football is the most popular sport with the local team, Ganmain-Grong Grong-Matong playing in the Riverina Football Netball League.