Gayndah is on the Burnett River and the Burnett Highway passes through the town. Apart from the town in the western part of the locality, the land is used for cropping and grazing. The Gayndah railway station is located on the north side of the river and is on the Mungar Junction to Monto Branch railway line.
Duchess Mountain is immediately to the south-west of the town and at 190 metres provides excellent views over the town (100 metres above sea level).
Gayndah is 366 kilometres north of the state capital Brisbane and 145 kilometres west of the regional city of Maryborough.
The North Burnett Regional Council operates Gayndah Library on Capper Street. The library offers publicly accessible Wi-Fi. The former St Joseph’s Convent in Meson St Gayndah was in 2011 converted into an arts and cultural centre, The Gayndah Arts & Cultural Centre also houses the Gayndah Art Gallery.
Also located in Gayndah is the tourist attraction, “The Big Orange”.
The name Gayndah is of Aboriginal origin and comes either from Gu-in-dah (or Gi-un-dah), meaning ‘thunder’, or from Ngainta, meaning ‘place of scrub’.