According to the U.S. Census Bureau, the population of Boston as of April 1, 2020, was 675,647. However, according to the latest projections from World Population Review, the current population of Boston as of November 7, 2023, is 617,459. This represents a decline from the 2020 population, which may be due to the COVID-19 pandemic. It is important to note that the population of the Greater Boston area is much larger, with an estimated 4.7 million people, making it the 10th largest metropolitan area in the United States.