RANKING · 2020 CENSUS · 21 SHOWN OF 21

Most racially diverse, New Jersey counties · 2020

New Jersey counties ranked by the CensusEasy Diversity Score (0 to 100), the chance two random residents are of a different race or ethnicity (2023 ACS). This list covers the 21 counties in New Jersey that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDOldest by median age Youngest by median age Most foreign-born residents Highest uninsured rate Most women Most men

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS 2000

01Middlesex County, NJNJ883,33590+30%

02Essex County, NJNJ896,37989+9%

03Hudson County, NJNJ735,03389+6%

04Mercer County, NJNJ399,28988+35%

05Union County, NJNJ601,86388+16%

06Cumberland County, NJNJ157,14883+17%

07Somerset County, NJNJ356,48682+59%

08Passaic County, NJNJ531,62481+6%

09Atlantic County, NJNJ278,65780+21%

10Camden County, NJNJ535,79979+31%

11Bergen County, NJNJ977,02679+45%

12Burlington County, NJNJ481,43967+47%

13Morris County, NJNJ524,25163+68%

14Salem County, NJNJ66,28057+40%

15Monmouth County, NJNJ651,03555+39%

16Gloucester County, NJNJ312,63850+70%

17Warren County, NJNJ112,95346+187%

18Hunterdon County, NJNJ131,78138+131%

19Ocean County, NJNJ673,74637+74%

20Sussex County, NJNJ148,06336+167%

21Cape May County, NJNJ93,39033+61%

SHOWING 1–21 OF 21

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES