RANKING · 2020 CENSUS · 21 SHOWN OF 21

Highest Slovak population share, New Jersey counties · 2020

New Jersey counties ranked by the share of all residents who are Slovak ancestry (2020 American Community Survey). A concentration measure: Slovak 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 0.4%.

Slovak 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

RANKPLACESTATEPOPSLOVAK SHAREVS 2010

01Hunterdon County, NJNJ131,7810.8%−0.3 pts

02Warren County, NJNJ112,9530.6%0.0 pts

03Somerset County, NJNJ356,4860.6%−0.3 pts

04Sussex County, NJNJ148,0630.6%−0.2 pts

05Morris County, NJNJ524,2510.5%−0.1 pts

06Ocean County, NJNJ673,7460.5%−0.2 pts

07Middlesex County, NJNJ883,3350.5%−0.3 pts

08Burlington County, NJNJ481,4390.5%0.0 pts

09Union County, NJNJ601,8630.5%−0.1 pts

10Mercer County, NJNJ399,2890.5%−0.3 pts

11Monmouth County, NJNJ651,0350.4%0.0 pts

12Gloucester County, NJNJ312,6380.4%+0.1 pts

13Cape May County, NJNJ93,3900.3%+0.1 pts

14Bergen County, NJNJ977,0260.2%−0.1 pts

15Atlantic County, NJNJ278,6570.2%0.0 pts

16Passaic County, NJNJ531,6240.2%−0.2 pts

17Camden County, NJNJ535,7990.2%−0.1 pts

18Salem County, NJNJ66,2800.1%−0.1 pts

19Hudson County, NJNJ735,0330.1%−0.1 pts

20Essex County, NJNJ896,3790.1%−0.1 pts

21Cumberland County, NJNJ157,1480.1%0.0 pts

SHOWING 1–21 OF 21

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