[2] In the 2021 census, South East Nanango had a population of 344 people.

[1] Cooyar Creek forms the south-eastern boundary of the locality, while its tributary Yarraman Creek forms most of the southern boundary.

The first report of gold found there was in March 1867 at a place described as seven miles from the town of Nanango by James Nash (who later discovered the Gympie Goldfields).

[2] In the 2016 census, South East Nanango had a population of 294 people.

[12] In the 2021 census, South East Nanango had a population of 344 people.