|Population||28 (2016 census)|
|• Density||2.20/km2 (5.71/sq mi)|
|Area||12.7 km2 (4.9 sq mi)|
|Time zone||AEST (UTC+10:00)|
|LGA(s)||Moreton Bay Region|
|State electorate(s)||Glass House|
The eastern border is marked by the Stanley River. Peachester State Forest occupies the eastern half of Commissioners Flat.
It was named after Stephen Simpson, the Queensland commissioner of lands, who used the area as a camp site in the mid-19th century. Although the normal rules of English grammar would suggest that the locality name should be spelled with a possessive apostrophe, the official titles of place names in Queensland do not include that particular punctuation.
- Australian Bureau of Statistics (27 June 2017). "Commissioners Flat (SSC)". 2016 Census QuickStats. Retrieved 20 October 2018.
- "Commissioners Flat – locality in Moreton Bay Region (entry 45486)". Queensland Place Names. Queensland Government. Retrieved 28 December 2020.
- "Burgalba Lagoon – waterhole in Moreton Bay Regional (entry 48276)". Queensland Place Names. Queensland Government. Retrieved 28 December 2020.
- "(Place) Naming principles". Queensland Government. Archived from the original on 22 February 2014. Retrieved 8 February 2014.