The terrain is mountainous in the centre and west of the locality, up to 310 metres (1,020 ft) above sea level. It is part of the Banana Range. This area is within the Overdeen State Forest. The eastern edge of the locality is lower, down to 140 metres (460 ft) above sea level. This eastern land is predominantly used for grazing on native vegetation with some cropping.[3]
In the 2016 census, Greycliffe had a population of 22 people.[6]
In the 2021 census, Greycliffe had a population of 56 people.[1]
Education
There are no schools in Greycliffe. The nearest primary schools are Goovigen State School in neighbouring Goovigen to the north, Jambin State School in neighbouring Jambin to the east, Prospect Creek State School in Prospect to the south-east and Banana State School in Banana to the south-west. The nearest secondary school is Biloela State High School in Biloela to the south-east.[3]