RANKING · 2020 CENSUS · 21 SHOWN OF 21

Highest Czech population share, New Jersey counties · 2020

New Jersey counties ranked by the share of all residents who are Czech ancestry (2023 American Community Survey). A concentration measure: Czech residents as a percentage of total population. 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

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

YEAR2010 2020 2024

RANKPLACESTATEPOPCZECH SHAREVS 2000

01Hunterdon County, NJNJ131,7810.5%–

02Sussex County, NJNJ148,0630.4%–

03Ocean County, NJNJ673,7460.4%–

04Morris County, NJNJ524,2510.4%–

05Somerset County, NJNJ356,4860.4%–

06Warren County, NJNJ112,9530.3%–

07Burlington County, NJNJ481,4390.3%–

08Camden County, NJNJ535,7990.3%–

09Monmouth County, NJNJ651,0350.3%–

10Cape May County, NJNJ93,3900.3%–

11Bergen County, NJNJ977,0260.3%–

12Passaic County, NJNJ531,6240.3%–

13Cumberland County, NJNJ157,1480.2%–

14Gloucester County, NJNJ312,6380.2%–

15Mercer County, NJNJ399,2890.2%–

16Union County, NJNJ601,8630.2%–

17Middlesex County, NJNJ883,3350.2%–

18Essex County, NJNJ896,3790.1%–

19Atlantic County, NJNJ278,6570.1%–

20Hudson County, NJNJ735,0330.1%–

21Salem County, NJNJ66,2800.1%–

SHOWING 1–21 OF 21

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