RANKING · 2024 ACS · 21 SHOWN OF 21

Highest Slovak population share, New Jersey counties

New Jersey counties ranked by the share of all residents who are Slovak ancestry (2024 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 0.3%. Biggest climber in the top 100 since 2020: Mercer County, NJ, up 6 places to #4.

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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

02▲1Somerset County, NJNJ356,4860.6%−0.3 pts

03▼1Warren County, NJNJ112,9530.5%−0.1 pts

04▲6Mercer County, NJNJ399,2890.5%−0.3 pts

05▲1Ocean County, NJNJ673,7460.5%−0.2 pts

06▼1Morris County, NJNJ524,2510.4%−0.2 pts

07▼3Sussex County, NJNJ148,0630.4%−0.3 pts

08Burlington County, NJNJ481,4390.4%−0.1 pts

09▼2Middlesex County, NJNJ883,3350.3%−0.4 pts

10▼1Union County, NJNJ601,8630.3%−0.3 pts

11Monmouth County, NJNJ651,0350.3%−0.1 pts

12▲1Cape May County, NJNJ93,3900.3%0.0 pts

13▼1Gloucester County, NJNJ312,6380.3%−0.1 pts

14▲2Passaic County, NJNJ531,6240.2%−0.2 pts

15Atlantic County, NJNJ278,6570.2%0.0 pts

16▼2Bergen County, NJNJ977,0260.2%−0.1 pts

17Camden County, NJNJ535,7990.1%−0.1 pts

18▲3Cumberland County, NJNJ157,1480.1%0.0 pts

19Hudson County, NJNJ735,0330.1%−0.1 pts

20▼2Salem County, NJNJ66,2800.1%−0.1 pts

21▼1Essex County, NJNJ896,3790.1%−0.1 pts

SHOWING 1–21 OF 21

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