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. The median across all 40 is 0.1%. Biggest climber in the top 100 since 2020: Winnebago County, IL, up 25 places to #7.

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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%–

05▲8Lee County, ILIL32,9140.2%+0.2 pts

06▲2Lake County, ILIL719,3390.1%+0.1 pts

07▲25Winnebago County, ILIL283,6740.1%+0.1 pts

08▼4Brown County, ILIL6,4010.1%–

09▲20Kendall County, ILIL145,4700.1%–

10▼3Cook County, ILIL5,194,6250.1%0.0 pts

11Clinton County, ILIL37,1280.1%–

12▲9Champaign County, ILIL209,9720.1%0.0 pts

13▲6Knox County, ILIL47,7670.1%–

14▼2DuPage County, ILIL934,2980.1%0.0 pts

15Kane County, ILIL525,7570.1%0.0 pts

16▲12Effingham County, ILIL34,5190.1%–

17▲13Sangamon County, ILIL194,1700.1%–

18Peoria County, ILIL178,5530.1%0.0 pts

19Henry County, ILIL48,0950.1%–

20▼6Will 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

24▼14McHenry County, ILIL317,7510.0%0.0 pts

25Stephenson County, ILIL43,2200.0%–

26Logan County, ILIL27,1820.0%0.0 pts

27▼1Macoupin County, ILIL43,7480.0%–

28Madison County, ILIL263,1100.0%0.0 pts

29▼5St. Clair County, ILIL250,7080.0%0.0 pts

30Vermilion County, ILIL71,2590.0%–

31Fulton County, ILIL32,9010.0%−0.1 pts

32▼21McLean County, ILIL171,4190.0%0.0 pts

33▼2Macon County, ILIL99,3000.0%0.0 pts

34▼1Rock Island County, ILIL141,8690.0%–

35▼26Kankakee County, ILIL105,5250.0%–

36Bond County, ILIL16,9590.0%–

37Livingston County, ILIL35,0570.0%–

38▼21Randolph County, ILIL29,9210.0%–

39▼17Tazewell County, ILIL130,0490.0%–

40Morgan County, ILIL32,5150.0%–

SHOWING 1–40 OF 40

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES