Data / Rankings / Population / Counties in New Jersey

Counties in New Jersey by population

Bergen County had the highest population of 21 counties in 2020, at 953,848. Salem County had the lowest, at 64,781. The median was 461,700 and the figure for New Jersey was 9.27 million. Source: the U.S. Census Bureau.

Highest953,848Bergen County
Lowest64,781Salem County
Median461,70021 counties
New Jersey9,270,476History

All counties, 2020

CSVChart (SVG)

Bergen CountyBergen County: 953,848 persons953,848Middlesex CountyMiddlesex County: 861,248 persons861,248Essex CountyEssex County: 859,934 persons859,934Hudson CountyHudson County: 721,800 persons721,800Monmouth CountyMonmouth County: 642,385 persons642,385Ocean CountyOcean County: 638,143 persons638,143Union CountyUnion County: 573,482 persons573,482Camden CountyCamden County: 523,239 persons523,239Passaic CountyPassaic County: 523,156 persons523,156Morris CountyMorris County: 508,211 persons508,211Burlington CountyBurlington County: 461,700 persons461,700Mercer CountyMercer County: 386,434 persons386,434Somerset CountySomerset County: 344,516 persons344,516Gloucester CountyGloucester County: 302,564 persons302,564Atlantic CountyAtlantic County: 274,192 persons274,192Cumberland CountyCumberland County: 153,733 persons153,733Sussex CountySussex County: 143,877 persons143,877Hunterdon CountyHunterdon County: 128,773 persons128,773Warren CountyWarren County: 109,431 persons109,431Cape May CountyCape May County: 95,029 persons95,029Salem CountySalem County: 64,781 persons64,781
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2020
persons
1Bergen County953,848
2Middlesex County861,248
3Essex County859,934
4Hudson County721,800
5Monmouth County642,385
6Ocean County638,143
7Union County573,482
8Camden County523,239
9Passaic County523,156
10Morris County508,211
11Burlington County461,700
12Mercer County386,434
13Somerset County344,516
14Gloucester County302,564
15Atlantic County274,192
16Cumberland County153,733
17Sussex County143,877
18Hunterdon County128,773
19Warren County109,431
20Cape May County95,029
21Salem County64,781

Other periods

About this ranking

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Rank Counties in New Jersey by population using official data, and cite the source.
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Questions

Which county has the highest population?

Bergen County, with 953,848 in 2020, according to the U.S. Census Bureau.

Which county has the lowest population?

Salem County, with 64,781 in 2020.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved 2026-10-08.

Population: other rankings

Counties in New Jersey: more rankings