RANKING · 2020 CENSUS · 33 SHOWN OF 33

Highest Dominican population share, Illinois counties · 2020

Illinois counties ranked by the share of all residents who are Dominican origin (2023 American Community Survey). A concentration measure: Dominican residents as a percentage of total population. This list covers the 33 counties in Illinois that qualify, ranked against each other statewide.

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

RANKPLACESTATEPOPDOMINICAN SHAREVS 2000

01Cass County, ILIL12,4630.6%–

02Edwards County, ILIL5,8980.2%–

03Ford County, ILIL13,2160.1%–

04Brown County, ILIL6,4010.1%–

05Calhoun County, ILIL4,3000.1%–

06Lawrence County, ILIL13,7900.1%–

07Cook County, ILIL5,194,6250.1%–

08Lake County, ILIL719,3390.1%–

09Kankakee County, ILIL105,5250.1%–

10McHenry County, ILIL317,7510.1%–

11McLean County, ILIL171,4190.1%–

12DuPage County, ILIL934,2980.1%–

13Lee County, ILIL32,9140.1%–

14Will County, ILIL712,2530.1%–

15Kane County, ILIL525,7570.1%–

16Adams County, ILIL64,2670.1%–

17Randolph County, ILIL29,9210.0%–

18Jackson County, ILIL52,5010.0%–

19Knox County, ILIL47,7670.0%–

20LaSalle County, ILIL107,7730.0%–

21Champaign County, ILIL209,9720.0%–

22Tazewell County, ILIL130,0490.0%–

23Franklin County, ILIL36,9160.0%–

24St. Clair County, ILIL250,7080.0%–

25Richland County, ILIL15,2190.0%–

26Macoupin County, ILIL43,7480.0%–

27Jersey County, ILIL21,1600.0%–

28Effingham County, ILIL34,5190.0%–

29Kendall County, ILIL145,4700.0%–

30Sangamon County, ILIL194,1700.0%–

31Macon County, ILIL99,3000.0%–

32Winnebago County, ILIL283,6740.0%–

33Rock Island County, ILIL141,8690.0%–

SHOWING 1–33 OF 33

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