RANKING · 2010 CENSUS · 18 SHOWN OF 18

Largest Costa Rican population, Illinois counties · 2010

Illinois counties ranked by the number of residents who are Costa Rican origin, from the 2010 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 18 counties in Illinois that qualify, ranked against each other statewide. The median across all 18 is 52.

Costa Rican Americans: full group profile →

IllinoisAll states All rankings

SAME RANKING BYCities States Metros

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

Largest Costa Rican population by state

RANKPLACESTATEPOPCOSTA RICAN POPULATIONVS –

01Cook County, ILIL5,194,6251,410–

02Lake County, ILIL719,339290–

03Winnebago County, ILIL283,674122–

04Madison County, ILIL263,11099–

05Kankakee County, ILIL105,52595–

06Peoria County, ILIL178,55386–

07DuPage County, ILIL934,29858–

08St. Clair County, ILIL250,70855–

09Kane County, ILIL525,75752–

10Champaign County, ILIL209,97246–

11Jo Daviess County, ILIL21,59432–

12Macoupin County, ILIL43,74816–

13Morgan County, ILIL32,51515–

14LaSalle County, ILIL107,77313–

15Will County, ILIL712,25313–

16Bond County, ILIL16,95912–

17Randolph County, ILIL29,9215–

18Williamson County, ILIL67,2255–

SHOWING 1–18 OF 18

Download CSV (full list, 18 rows)

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