Massachusetts Citizen Population By County in 2013 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2013, the citizen population for Massachusetts was 6,114,210 and represented 92.57% of the total Massachusetts population.

Among all Massachusetts counties, Middlesex had the highest citizen population (1.37M), followed by Worcester (757.99K), and Essex (697.72K).

In terms of percentages, Franklin had the highest percentage of its population being citizens (97.92%), followed by Berkshire (97.90%), and Barnstable (96.91%).

The chart and table below shows the citizen population of each county and the percentage of each county's population that were citizens.

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

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Massachusetts Citizen Population By County in 2013
Massachusetts Citizen Population By County in 2013
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County Citizen Population % of County Population
Middlesex 1367255 89.80
Worcester 757990 94.43
Essex 697720 92.93
Norfolk 634240 93.64
Suffolk 622480 84.61
Bristol 525700 95.60
Plymouth 480125 96.53
Hampden 444610 95.59
Barnstable 208795 96.91
Hampshire 152185 95.56
Berkshire 127800 97.90
Franklin 69925 97.92
Dukes 16170 96.60
Nantucket 9215 90.12