RANKING · 2024 ACS · 40 SHOWN OF 40

Highest Dominican population share, Illinois counties

Illinois counties ranked by the share of all residents who are Dominican origin (2024 American Community Survey). A concentration measure: Dominican residents as a percentage of total population. This list covers the 40 counties in Illinois that qualify, ranked against each other statewide.

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 SHAREVS 2010

01Cass County, ILIL12,4630.8%+0.5 pts

02Wayne County, ILIL15,8820.5%–

03Ogle County, ILIL51,3990.5%+0.5 pts

04Greene County, ILIL11,3130.2%–

05Lee County, ILIL32,9140.2%+0.2 pts

06Lake County, ILIL719,3390.1%+0.1 pts

07Winnebago County, ILIL283,6740.1%+0.1 pts

08Brown County, ILIL6,4010.1%–

09Kendall County, ILIL145,4700.1%–

10Cook County, ILIL5,194,6250.1%+0.0 pts

11Clinton County, ILIL37,1280.1%–

12Champaign County, ILIL209,9720.1%+0.0 pts

13Knox County, ILIL47,7670.1%–

14DuPage County, ILIL934,2980.1%+0.0 pts

15Kane County, ILIL525,7570.1%+0.0 pts

16Effingham County, ILIL34,5190.1%–

17Sangamon County, ILIL194,1700.1%–

18Peoria County, ILIL178,5530.1%+0.0 pts

19Henry County, ILIL48,0950.1%–

20Will County, ILIL712,2530.1%+0.0 pts

21Montgomery County, ILIL28,0760.1%–

22Henderson County, ILIL5,9840.0%–

23Whiteside County, ILIL54,1210.0%+0.0 pts

24McHenry County, ILIL317,7510.0%+0.0 pts

25Stephenson County, ILIL43,2200.0%–

26Logan County, ILIL27,1820.0%+0.0 pts

27Macoupin County, ILIL43,7480.0%–

28Madison County, ILIL263,1100.0%+0.0 pts

29St. Clair County, ILIL250,7080.0%+0.0 pts

30Vermilion County, ILIL71,2590.0%–

31Fulton County, ILIL32,9010.0%−0.1 pts

32McLean County, ILIL171,4190.0%+0.0 pts

33Macon County, ILIL99,3000.0%−0.0 pts

34Rock Island County, ILIL141,8690.0%–

35Kankakee County, ILIL105,5250.0%–

36Bond County, ILIL16,9590.0%–

37Livingston County, ILIL35,0570.0%–

38Randolph County, ILIL29,9210.0%–

39Tazewell County, ILIL130,0490.0%–

40Morgan County, ILIL32,5150.0%–

SHOWING 1–40 OF 40

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES