The area around Gayndah was first explored by Europeans in 1843. The first settlers settled here in 1848, a year later the city was founded and the first post office opened in 1850. From the beginning, agriculture and livestock have been the predominant industries in the area. Today Gayndah is the center of citrus production in Queensland. The Gayndah Orange Festival takes place every two years.
The city's name is derived from an Aboriginal term , either from Gu-in-dah (or Gi-un-dah ) for thunder, or from Ngainta for a place with undergrowth.
^ New South Wales Government Gazette , January 19, 1850, cited by Frew, Joan (1981). Queensland Post Offices 1842-1980 and Receiving Offices 1869-1927 , p. 277. Fortitude Valley, Queensland, ISBN 0-9593973-0-2 .
^ Reed, AW (1973). Place Names of Australia , p. 102. Sydney: AH & AW Reed. ISBN 0-589-07115-7 .