Suffolk County Flag

Suffolk County

State:
Massachusetts
County Seat:

Suffolk County's estimated 2025 population is 804,610 with a growth rate of 1.45% in the past year according to the most recent United States census data. Suffolk County is the 4th largest county in Massachusetts. The 2010 population was 725,786 and has seen a growth of 10.86% since that time.

804,610
Total Population
13,873
Population Density (mi²)
4
Population Rank (State)
11.5K 1.45%
Annual Population Growth

Suffolk County Population

Demographics

Economics and Income Statistics

Sources

  1. City and Town Population Totals: 2020-2024
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)