Massachusetts Citizen Voting-age Population By County in 2021 (ACS-5Yrs)

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the citizen voting-age population for Massachusetts was 5,105,070 and represented 73.02% of the total Massachusetts population.

Among all Massachusetts counties, Middlesex had the highest citizen voting-age population (1.14M), followed by Worcester (630.71K), and Essex (577.84K).

In terms of percentages, Barnstable had the highest percentage of its population being citizens of voting-age (81.26%), followed by Berkshire (81.20%), and Hampshire (81.17%).

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

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