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 (2023 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.

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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 2000

01Somerset County, NJNJ356,4861.1%–

02Mercer County, NJNJ399,2890.6%–

03Union County, NJNJ601,8630.5%–

04Passaic County, NJNJ531,6240.5%–

05Warren County, NJNJ112,9530.4%–

06Morris County, NJNJ524,2510.4%–

07Essex County, NJNJ896,3790.2%–

08Bergen County, NJNJ977,0260.2%–

09Hudson County, NJNJ735,0330.2%–

10Hunterdon County, NJNJ131,7810.1%–

11Ocean County, NJNJ673,7460.1%–

12Middlesex County, NJNJ883,3350.1%–

13Atlantic County, NJNJ278,6570.1%–

14Burlington County, NJNJ481,4390.1%–

15Monmouth County, NJNJ651,0350.1%–

16Gloucester County, NJNJ312,6380.0%–

17Camden County, NJNJ535,7990.0%–

18Sussex County, NJNJ148,0630.0%–

19Cape May County, NJNJ93,3900.0%–

SHOWING 1–19 OF 19

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES