RANKING · 2020 CENSUS · 21 SHOWN OF 21

Largest Czech population, New Jersey counties · 2020

New Jersey counties ranked by the number of residents who are Czech ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. 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 POPULATIONVS 2010

01Ocean County, NJNJ673,7462,662−21%

02Bergen County, NJNJ977,0262,525−30%

03Morris County, NJNJ524,2511,970−47%

04Monmouth County, NJNJ651,0351,735−32%

05Camden County, NJNJ535,7991,437+22%

06Burlington County, NJNJ481,4391,390+3%

07Middlesex County, NJNJ883,3351,269−52%

08Passaic County, NJNJ531,6241,267−8%

09Somerset County, NJNJ356,4861,256−21%

10Essex County, NJNJ896,3791,154−13%

11Union County, NJNJ601,863873−49%

12Mercer County, NJNJ399,289694−59%

13Hunterdon County, NJNJ131,781687−31%

14Hudson County, NJNJ735,033651−24%

15Sussex County, NJNJ148,063628−56%

16Gloucester County, NJNJ312,638584−29%

17Warren County, NJNJ112,953361−63%

18Atlantic County, NJNJ278,657358−43%

19Cumberland County, NJNJ157,148303+36%

20Cape May County, NJNJ93,390256−13%

21Salem County, NJNJ66,28053+20%

SHOWING 1–21 OF 21

Download CSV (full list, 21 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS