RANKING · 2010 CENSUS · 21 SHOWN OF 21

Highest American population share, New Jersey counties · 2010

New Jersey counties ranked by the share of all residents who are American ancestry (2010 American Community Survey). A concentration measure: American residents as a percentage of total population. This list covers the 21 counties in New Jersey that qualify, ranked against each other statewide. The median across all 21 is 3.3%.

American ancestry: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest American population Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share Largest Iraqi population

YEAR2010 2020 2024

RANKPLACESTATEPOPAMERICAN SHAREVS –

01Warren County, NJNJ112,9536.4%–

02Cumberland County, NJNJ157,1485.5%–

03Somerset County, NJNJ356,4864.9%–

04Monmouth County, NJNJ651,0354.8%–

05Cape May County, NJNJ93,3904.7%–

06Salem County, NJNJ66,2804.6%–

07Ocean County, NJNJ673,7464.4%–

08Passaic County, NJNJ531,6243.7%–

09Sussex County, NJNJ148,0633.4%–

10Hunterdon County, NJNJ131,7813.4%–

11Union County, NJNJ601,8633.3%–

12Atlantic County, NJNJ278,6573.2%–

13Gloucester County, NJNJ312,6383.1%–

14Mercer County, NJNJ399,2893.0%–

15Middlesex County, NJNJ883,3352.9%–

16Burlington County, NJNJ481,4392.9%–

17Essex County, NJNJ896,3792.8%–

18Morris County, NJNJ524,2512.7%–

19Camden County, NJNJ535,7992.5%–

20Bergen County, NJNJ977,0262.3%–

21Hudson County, NJNJ735,0331.2%–

SHOWING 1–21 OF 21

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