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Boston population

Boston, Massachusetts had an estimated 672,973 residents on July 1, 2025, the 25th-largest city in the US. That is up 9% since the 2010 Census and up 14% since 2000.

BostonMassachusettsPop. 672,973
Population, July 2025
672,973-0.8% since April 2020
People per sq mile
13,92148.3 sq mi of land
Median age
33.313% are 65 or older
Households with kids
19.7%with anyone under 18

Population by year, 2000 to 2025

490k541k592k643k695k2000: 590,35520002001: 598,2082002: 599,30120022003: 595,8642004: 591,16620042005: 587,2602006: 587,81620062007: 593,1362008: 600,68520082009: 612,6692010: 617,59420102011: 630,6202012: 643,18020122013: 653,3122014: 663,26020142015: 670,9822016: 680,21820162017: 688,2392018: 692,04820182019: 694,6612020: 678,61720202021: 659,8842022: 661,01420222023: 667,4532024: 674,31120242025: 672,9732025
Darker bars are the April 2000, 2010 and 2020 benchmarks; the rest are July 1 estimates. Source: US Census Bureau population estimates (intercensal 2000-2010, Vintage 2020 and Vintage 2025).
YearPopulationChangeBasis
2025672,973-1,338Estimate, July 1
2024674,311+6,858Estimate, July 1
2023667,453+6,439Estimate, July 1
2022661,014+1,130Estimate, July 1
2021659,884-18,733Estimate, July 1
2020678,617-16,044April 2020 estimates base
2019694,661+2,613Estimate, July 1
2018692,048+3,809Estimate, July 1
2017688,239+8,021Estimate, July 1
2016680,218+9,236Estimate, July 1
2015670,982+7,722Estimate, July 1
2014663,260+9,948Estimate, July 1
2013653,312+10,132Estimate, July 1
2012643,180+12,560Estimate, July 1
2011630,620+13,026Estimate, July 1
2010617,594+4,9252010 Census (April 1)
2009612,669+11,984Estimate, July 1
2008600,685+7,549Estimate, July 1
2007593,136+5,320Estimate, July 1
2006587,816+556Estimate, July 1
2005587,260-3,906Estimate, July 1
2004591,166-4,698Estimate, July 1
2003595,864-3,437Estimate, July 1
2002599,301+1,093Estimate, July 1
2001598,208+7,853Estimate, July 1
2000590,355April 2000 estimates base

Year-to-year changes across 2010 and 2020 mix census counts with estimates, so small jumps at those years are partly method changes.

Frequently asked questions

What is the population of Boston in 2025?

The Census Bureau estimates Boston had 672,973 residents on July 1, 2025, making it the 25th-largest city in the US.

Is Boston growing?

Yes. Boston has grown 9% since the 2010 Census (617,594 people), and shrunk 0.8% since 2020.

What was the population of Boston in 2000?

About 590,355 (the Census Bureau's April 2000 estimates base). By the 2010 Census it was 617,594.

How dense is Boston?

Boston has about 13,921 people per square mile of land (48.3 square miles).

More about Boston

See cost of living, jobs and commutes in Boston, Boston weather by month, or every Boston ZIP code. For the biggest cities in the country, see the largest US cities.