Massachusetts Counties by Population (2024)

Population

200K

400K

600K

800K

1M

1.2M

1.4M

1.6M

Hover/click a county for data.
County
2024 Pop.
Change (2020)
Area (mi²)
Density (/mi²)
Location
Middlesex County1,631,1100.18%3161,994Middlesex County location
Worcester County870,8591.3%583576Worcester County location
Essex County813,6790.73%1901,650Essex County location
Suffolk County768,038-3.66%2213,242Suffolk County location
Norfolk County729,4770.68%1531,842Norfolk County location
Bristol County583,9381.24%2131,056Bristol County location
Plymouth County537,3681.35%254815Plymouth County location
Hampden County459,824-0.97%238745Hampden County location
Barnstable County231,3921.48%152587Barnstable County location
Hampshire County162,48610.82%203308Hampshire County location
Berkshire County126,089-1.97%358136Berkshire County location
Franklin County70,677-0.35%270101Franklin County location
Dukes County20,6760.4%40201Dukes County location
Nantucket County14,4451.46%18314Nantucket County location
  1. Massachusetts State Data Center
  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)

Sources