RANKING · 2024 ACS · 20 SHOWN OF 20

Highest Costa Rican population share, Illinois counties

Illinois 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 20 counties in Illinois 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

01Ford County, ILIL13,2160.1%–

02Marion County, ILIL36,3820.1%–

03Carroll County, ILIL15,4190.1%–

04Champaign County, ILIL209,9720.1%–

05Macoupin County, ILIL43,7480.1%–

06St. Clair County, ILIL250,7080.1%–

07Peoria County, ILIL178,5530.0%–

08Cook County, ILIL5,194,6250.0%–

09Will County, ILIL712,2530.0%–

10Livingston County, ILIL35,0570.0%–

11LaSalle County, ILIL107,7730.0%–

12Kendall County, ILIL145,4700.0%–

13Randolph County, ILIL29,9210.0%–

14Kankakee County, ILIL105,5250.0%–

15Kane County, ILIL525,7570.0%–

16DeKalb County, ILIL101,8350.0%–

17McHenry County, ILIL317,7510.0%–

18DuPage County, ILIL934,2980.0%–

19Lake County, ILIL719,3390.0%–

20Winnebago County, ILIL283,6740.0%–

SHOWING 1–20 OF 20

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