RANKING · 2020 CENSUS · 19 SHOWN OF 19

Highest Costa Rican population share, New Jersey counties · 2020

New Jersey counties ranked by the share of all residents who are Costa Rican origin (2020 American Community Survey). A concentration measure: Costa Rican residents as a percentage of total population. This list covers the 19 counties in New Jersey that qualify, ranked against each other statewide. The median across all 19 is 0.1%.

Costa Rican Americans: full group profile →

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RELATEDLargest Mexican population Highest Mexican population share Largest Puerto Rican population Highest Puerto Rican population share Largest Cuban population Highest Cuban population share

YEAR2010 2020 2024

Highest Costa Rican population share by state

RANKPLACESTATEPOPCOSTA RICAN SHAREVS 2010

01Somerset County, NJNJ356,4861.1%+0.4 pts

02Mercer County, NJNJ399,2890.6%+0.2 pts

03Union County, NJNJ601,8630.5%−0.2 pts

04Passaic County, NJNJ531,6240.5%+0.1 pts

05Warren County, NJNJ112,9530.4%0.0 pts

06Morris County, NJNJ524,2510.4%+0.1 pts

07Essex County, NJNJ896,3790.2%0.0 pts

08Bergen County, NJNJ977,0260.2%0.0 pts

09Hudson County, NJNJ735,0330.2%0.0 pts

10Hunterdon County, NJNJ131,7810.1%0.0 pts

11Ocean County, NJNJ673,7460.1%0.0 pts

12Middlesex County, NJNJ883,3350.1%0.0 pts

13Atlantic County, NJNJ278,6570.1%–

14Burlington County, NJNJ481,4390.1%0.0 pts

15Monmouth County, NJNJ651,0350.1%0.0 pts

16Gloucester County, NJNJ312,6380.0%0.0 pts

17Camden County, NJNJ535,7990.0%0.0 pts

18Sussex County, NJNJ148,0630.0%0.0 pts

19Cape May County, NJNJ93,3900.0%−0.1 pts

SHOWING 1–19 OF 19

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