Ottawa's 2021 population is now estimated at 1,407,928. In 1950, the population of Ottawa was 282,326. Ottawa has grown by 14,842 since 2015, which represents a 1.07% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Ottawa, which typically includes Ottawa's population in addition to adjacent suburban areas.