RANKING · 2020 CENSUS · 33 SHOWN OF 33

Largest Dominican population, Illinois counties · 2020

Illinois counties ranked by the number of residents who are Dominican origin, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 33 counties in Illinois that qualify, ranked against each other statewide. The median across all 33 is 21.

Dominican 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

RANKPLACESTATEPOPDOMINICAN POPULATIONVS 2010

01Cook County, ILIL5,194,6254,870+28%

02Lake County, ILIL719,339601+74%

03DuPage County, ILIL934,298572+44%

04Will County, ILIL712,253395+78%

05Kane County, ILIL525,757287+190%

06McHenry County, ILIL317,751226+113%

07McLean County, ILIL171,419115+156%

08Kankakee County, ILIL105,52581–

09Cass County, ILIL12,46371+78%

10St. Clair County, ILIL250,70853+1225%

11Champaign County, ILIL209,97250+16%

12Adams County, ILIL64,26735–

13Tazewell County, ILIL130,04930–

14LaSalle County, ILIL107,77329–

15Jackson County, ILIL52,50122−15%

16Lee County, ILIL32,91421+950%

17Winnebago County, ILIL283,67421−63%

18Sangamon County, ILIL194,17017–

19Ford County, ILIL13,21617+13%

20Lawrence County, ILIL13,79015–

21Edwards County, ILIL5,89815–

22Knox County, ILIL47,76714–

23Randolph County, ILIL29,92114–

24Kendall County, ILIL145,47012–

25Rock Island County, ILIL141,8699–

26Macon County, ILIL99,3009−70%

27Franklin County, ILIL36,9168–

28Brown County, ILIL6,4017–

29Macoupin County, ILIL43,7487–

30Calhoun County, ILIL4,3005–

31Effingham County, ILIL34,5194–

32Jersey County, ILIL21,1603–

33Richland County, ILIL15,2193–

SHOWING 1–33 OF 33

Download CSV (full list, 33 rows)

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