Massachusetts Population By County in 2019

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2019, the population of Massachusetts was 6,894,883. Among all Massachusetts counties, Middlesex had the highest population (1,611,263), followed by Worcester (829,327), and Suffolk (805,915). Nantucket was the least populated county (11,330).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

You can see similar information for other states and by state for the United States.

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Massachusetts Population By County in 2019
Massachusetts Population By County in 2019
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County Population % of State Population
Barnstable 212923 3.09
Berkshire 125217 1.82
Bristol 565096 8.20
Dukes 17461 0.25
Essex 789725 11.45
Franklin 70276 1.02
Hampden 465749 6.76
Hampshire 161596 2.34
Middlesex 1611263 23.37
Nantucket 11330 0.16
Norfolk 707164 10.26
Plymouth 521841 7.57
Suffolk 805915 11.69
Worcester 829327 12.03