At the 2021 census, Collingullie had a population of 258 people.[3] The name, Collingullie, could have derived from an Aboriginal word meaning 'boggy ground'.[4]
Collingullie Post Office opened on 1 August 1879 and closed in 1982.[5] The town's school, Collingullie Public School which has 56 students, is located on Urana Street.[6]