Boston City Population 2025 By Religion. Boston city has a 2025 population of 654,423. The 2025 revision also presents population projections to the year 2100 that reflect a range of plausible outcomes at the global, regional and national levels.
For the most accurate total population counts from the 2020 census adjusted for the city of boston’s group quarters challenge: Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions.