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

Updated on February 28, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the voting-age population of New Jersey was 7.19M which was 77.90% of the total New Jersey population. Among all New Jersey counties, Bergen had the highest voting-age population (749.84K), followed by Middlesex (670.90K), and Essex (648.68K).

On the other hand, the counties with the least voting-age population were: Salem (50.69K), Cape May (78.68K), and Warren (87.85K).

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.

Related Topics: New Jersey ACS-5Yrs Estimates, 2021 Topic List.

Data Source: US Census - ACS 5-Year Estimates, 2021 Census.

New Jersey Voting-age Population By County in 2021

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County	Voting-age Population	% of County Population
Atlantic	215545	78.71
Bergen	749837	78.68
Burlington	363832	79.08
Camden	401882	77.11
Cape May	78679	82.40
Cumberland	117366	75.76
Essex	648678	76.07
Gloucester	234916	78.09
Hudson	566884	79.48
Hunterdon	103969	80.72
Mercer	302290	78.53
Middlesex	670903	78.12
Monmouth	505924	78.79
Morris	400996	78.88
Ocean	475570	75.48
Passaic	396153	76.03
Salem	50693	78.29
Somerset	268807	78.15
Sussex	115997	80.28
Union	436808	76.37
Warren	87853	80.34