In the 2016 census, Thorndale had a population of 150 people.[9]
In the 2021 census, Thorndale had a population of 134 people.[1]
Education
There are no schools in Thorndale. The nearest government primary schools are Broadwater State School in neighbouring Broadwater to the north, Severnlea State School in neighbouring Severnlea to the east, and Glen Alpin State School in neighbouring Glen Alpin to the south.[10]
The nearest government secondary school is Stanthorpe State High School in Stanthorpe to the north-east.[10]