RANKING · 1990 CENSUS · 21 SHOWN OF 21

Largest by population, New Jersey counties · 1990

The most populous New Jersey counties as of the 1990 population estimates. This list covers the 21 counties in New Jersey that qualify, ranked against each other statewide. The median across all 21 is 395,066.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS –

01Bergen County, NJNJ825,380–

02Essex County, NJNJ778,206–

03Middlesex County, NJNJ671,780–

04Monmouth County, NJNJ553,124–

05Hudson County, NJNJ553,099–

06Camden County, NJNJ502,824–

07Union County, NJNJ493,819–

08Passaic County, NJNJ453,060–

09Ocean County, NJNJ433,203–

10Morris County, NJNJ421,353–

11Burlington County, NJNJ395,066–

12Mercer County, NJNJ325,824–

13Somerset County, NJNJ240,279–

14Gloucester County, NJNJ230,082–

15Atlantic County, NJNJ224,327–

16Cumberland County, NJNJ138,053–

17Sussex County, NJNJ130,943–

18Hunterdon County, NJNJ107,776–

19Cape May County, NJNJ95,089–

20Warren County, NJNJ91,607–

21Salem County, NJNJ65,294–

SHOWING 1–21 OF 21

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS