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 (2020 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.

Czech Americans: full group profile →

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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 2010

01Hunterdon County, NJNJ131,7810.5%−0.2 pts

02Sussex County, NJNJ148,0630.4%−0.5 pts

03Ocean County, NJNJ673,7460.4%−0.1 pts

04Morris County, NJNJ524,2510.4%−0.4 pts

05Somerset County, NJNJ356,4860.4%−0.1 pts

06Warren County, NJNJ112,9530.3%−0.5 pts

07Burlington County, NJNJ481,4390.3%+0.0 pts

08Camden County, NJNJ535,7990.3%+0.1 pts

09Monmouth County, NJNJ651,0350.3%−0.1 pts

10Cape May County, NJNJ93,3900.3%−0.0 pts

11Bergen County, NJNJ977,0260.3%−0.1 pts

12Passaic County, NJNJ531,6240.3%−0.0 pts

13Cumberland County, NJNJ157,1480.2%+0.1 pts

14Gloucester County, NJNJ312,6380.2%−0.1 pts

15Mercer County, NJNJ399,2890.2%−0.3 pts

16Union County, NJNJ601,8630.2%−0.2 pts

17Middlesex County, NJNJ883,3350.2%−0.2 pts

18Essex County, NJNJ896,3790.1%−0.0 pts

19Atlantic County, NJNJ278,6570.1%−0.1 pts

20Hudson County, NJNJ735,0330.1%−0.0 pts

21Salem County, NJNJ66,2800.1%+0.0 pts

SHOWING 1–21 OF 21

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS