RANKING · 2024 ACS · 21 SHOWN OF 21

Highest Czech population share, New Jersey counties

New Jersey counties ranked by the share of all residents who are Czech ancestry (2024 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. The median across all 21 is 0.2%. Biggest climber in the top 100 since 2020: Gloucester County, NJ, up 7 places to #7.

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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

01▲1Sussex County, NJNJ148,0630.5%−0.4 pts

02▼1Hunterdon County, NJNJ131,7810.5%−0.3 pts

03▲2Somerset County, NJNJ356,4860.4%−0.1 pts

04Morris County, NJNJ524,2510.3%−0.4 pts

05▲1Warren County, NJNJ112,9530.3%−0.6 pts

06▼3Ocean County, NJNJ673,7460.3%−0.3 pts

07▲7Gloucester County, NJNJ312,6380.3%0.0 pts

08▲7Mercer County, NJNJ399,2890.3%−0.2 pts

09▼2Burlington County, NJNJ481,4390.3%0.0 pts

10▼1Monmouth County, NJNJ651,0350.2%−0.2 pts

11Bergen County, NJNJ977,0260.2%−0.2 pts

12▼2Cape May County, NJNJ93,3900.2%−0.1 pts

13▲3Union County, NJNJ601,8630.2%−0.2 pts

14▼2Passaic County, NJNJ531,6240.2%−0.1 pts

15▲3Essex County, NJNJ896,3790.1%0.0 pts

16▼8Camden County, NJNJ535,7990.1%−0.1 pts

17Middlesex County, NJNJ883,3350.1%−0.2 pts

18▲2Hudson County, NJNJ735,0330.1%0.0 pts

19Atlantic County, NJNJ278,6570.1%−0.1 pts

20▼7Cumberland County, NJNJ157,1480.1%−0.1 pts

21Salem County, NJNJ66,2800.0%0.0 pts

SHOWING 1–21 OF 21

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES