Population in Massachusetts by County

Total population.

U.S. Census Bureau · ACS 5-year 2020-2024 · Updated November 2026

Massachusetts

7,044,056

Counties

14

Highest

Middlesex

1,638,365

Lowest

Nantucket

14,483

All Massachusetts counties, ranked

# Counties Population
1 Middlesex 1,638,365
2 Worcester 867,788
3 Essex 813,054
4 Suffolk 785,121
5 Norfolk 730,082
6 Bristol 582,270
7 Plymouth 535,075
8 Hampden 462,815
9 Barnstable 231,668
10 Hampshire 162,028
11 Berkshire 129,430
12 Franklin 70,944
13 Dukes 20,933
14 Nantucket 14,483

About this dataset

Total population. Source: ACS 5-year 2020-2024 Data Profile, variable DP05_0001E. Values in people.

Source
U.S. Census Bureau
Citation
U.S. Census Bureau, American Community Survey 5-Year Estimates Data Profiles (2020-2024), DP05_0001E
Vintage
ACS 5-year 2020-2024
License
Public domain (U.S. Census Bureau)
Unit
people
Available at
State · County · ZIP code
Territory roll-up
Summed across each territory
Last loaded
November 2026

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Population by county in other states

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US Population nationwide