Canada's population was estimated at 40,528,396 on October 1, 2023, an increase of 430,635 people (+1.1%) from July 1. This was the highest population growth rate in any quarter since the second quarter of 1957 (+1.2%), when Canada's population grew by 198,000 people. At the time, Canada's population was 16.7 million people, and this rapid population growth resulted from the high number of births during the post-war baby boom and high immigration of refugees following the Hungarian Revolution in 1956.