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

Based on the US Census ACS-5Yrs estimates, in 2021, the voting-age population of Connecticut was 2.86M which was 79.35% of the total Connecticut population. Among all Connecticut counties, Fairfield had the highest voting-age population (741.52K), followed by Hartford (708.89K), and New Haven (689.26K).

On the other hand, the counties with the least voting-age population were: Windham (93.39K), Tolland (124.03K), and Middlesex (135.69K).

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

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