Connecticut Citizen Voting-age Population By County in 2016 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2016, the citizen voting-age population for Connecticut was 2,582,885 and represented 71.97% of the total Connecticut population.

Among all Connecticut counties, Hartford had the highest citizen voting-age population (644.94K), followed by New Haven (631.72K), and Fairfield (618.28K).

In terms of percentages, Tolland had the highest percentage of its population being citizens of voting-age (78.46%), followed by Middlesex (77.57%), and Litchfield (77.46%).

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.

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Connecticut Citizen Voting-age Population By County in 2016
Connecticut Citizen Voting-age Population By County in 2016
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County Citizen Voting-age Population % of County Population
Hartford 644940 72.00
New Haven 631715 73.38
Fairfield 618280 65.66
New London 208340 76.59
Litchfield 143400 77.46
Middlesex 127550 77.57
Tolland 119015 78.46
Windham 89640 76.56