New Jersey Population By County in 2023

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2023, the population of New Jersey was 9,379,642. Among all New Jersey counties, Bergen had the highest population (966,484), followed by Middlesex (876,119), and Essex (864,310).

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.

Related Topics: New Jersey Census Vintage Data Topic List.

Data Source: US Census Bureau (Vintage).

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New Jersey Population By County in 2023

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County	Population	% of State Population
Atlantic	276937	2.95
Bergen	966484	10.30
Burlington	470561	5.02
Camden	529576	5.65
Cape May	94643	1.01
Cumberland	153338	1.64
Essex	864310	9.22
Gloucester	308840	3.29
Hudson	721320	7.69
Hunterdon	130633	1.39
Mercer	386296	4.12
Middlesex	876119	9.34
Monmouth	644941	6.88
Morris	517738	5.52
Ocean	660445	7.04
Passaic	520219	5.55
Salem	65429	0.70
Somerset	352095	3.75
Sussex	146294	1.56
Union	582080	6.21
Warren	111344	1.19