Gunnedah and the surrounding areas were originally inhabited by Aboriginal Australians speaking the
Kamilaroi (
Gamilaraay) language. The name of the town in Kamilaroi means "Place of White Stones". The
Red Chief Local Aboriginal Land Council, established in 1984 under the
Aboriginal Land Rights Act 1983 (NSW), represents the Aboriginal community in the Gunnedah area as part of the
NSW Aboriginal Land Council network. In 1818, English surveyor general
John Oxley traversed the district, for which a monument pays tribute to him at the base of Mullaley Mountain. The area now occupied by the town was settled by European sheep farmers in 1833 or 1834. With settlement in the area focused on wool production, Gunnedah was initially known as 'The Woolshed' until taking its name from the local Indigenous people who called themselves the
Gunn-e-darr, the most famous of whom was
Cumbo Gunnerah. Coal was discovered on Black Jack Hill in 1877. By 1891, 6,000 tons of coal had been raised from shafts. The Gunnedah Colliery Company was registered in May 1899 and by 22 June a private railway some in length had been completed from the railway station to their mine. In September 1957, the Government Railway took over the working of the line.
Dorothea Mackellar wrote her famous poem
My Country (popularly known as
I Love a Sunburnt Country) about her family's farm near Gunnedah. == Heritage listings ==