Suffolk County Flag

Suffolk County

State:
Massachusetts
County Seat:

Suffolk County's estimated 2026 population is 816,076 with a growth rate of 1.43% 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 12.44% since that time.

816,076
Total Population
14,070
Population Density (mi²)
4
Population Rank (State)
11.5K 1.43%
Annual Population Growth

Suffolk County Population

Demographics

Economics and Income Statistics