As a designated place in the 2016 Census of Population conducted by Statistics Canada, Aetna recorded a population of 113 living in 31 of its 33 total private dwellings, a change of 50.7% from its 2011 population of 75. With a land area of 0.95 km2 (0.37 sq mi), it had a population density of 118.9/km2 (308.1/sq mi) in 2016.
- Alberta Municipal Affairs (2010-04-01). "Specialized and Rural Municipalities and Their Communities" (PDF). Retrieved 2010-06-21.
- Shaw, Keith (1978). Chief mountain country : a history of Cardston and district. Volume I. Cardston: Cardston and District Historical Society. p. 53. ISBN 0-919213-89-8.
- "Population and dwelling counts, for Canada, provinces and territories, and designated places, 2016 and 2011 censuses – 100% data (Alberta)". Statistics Canada. February 8, 2017. Retrieved February 13, 2017.
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