New Jersey Population By County in 2021

Updated on August 1, 2024.

Based on the US Census Vintage data estimates, in 2021, the population of New Jersey was 9,269,175. Among all New Jersey counties, Bergen had the highest population (955,383), followed by Middlesex (862,364), and Essex (854,233). Salem was the least populated county (65,045).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

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

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New Jersey Population By County in 2021
New Jersey Population By County in 2021
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County Population % of State Population
Atlantic 274956 2.97
Bergen 955383 10.31
Burlington 464479 5.01
Camden 524093 5.65
Cape May 95706 1.03
Cumberland 152083 1.64
Essex 854233 9.22
Gloucester 304592 3.29
Hudson 703448 7.59
Hunterdon 129671 1.40
Mercer 382172 4.12
Middlesex 862364 9.30
Monmouth 646517 6.98
Morris 510613 5.51
Ocean 649825 7.01
Passaic 518376 5.59
Salem 65045 0.70
Somerset 346498 3.74
Sussex 145721 1.57
Union 572833 6.18
Warren 110567 1.19