The population of the City of Airdrie according to its 2019 municipal census is 70,564, a change of 3.6% from its 2018 municipal census population of 68,091.

In the 2016 Census of Population conducted by Statistics Canada, the City of Airdrie recorded a population of 61,581 living in 21,661 of its 22,398 total private dwellings, a change of 42.3% from its 2011 population of 43,271. With a land area of 84.57 km2 (32.65 sq mi), it had a population density of 728.2/km2 (1,885.9/sq mi) in 2016.