RANKING · 2024 ACS · 40 SHOWN OF 40

Largest Dominican population, Illinois counties

Illinois counties ranked by the number of residents who are Dominican origin, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 40 counties in Illinois that qualify, ranked against each other statewide. The median across all 40 is 30. Biggest climber in the top 100 since 2020: Kendall County, IL, up 16 places to #8.

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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, ILIL5,194,6255,727+51%

02Lake County, ILIL719,3391,057+205%

03DuPage County, ILIL934,298563+42%

04▲13Winnebago County, ILIL283,674413+638%

05▼1Will County, ILIL712,253359+62%

06▼1Kane County, ILIL525,757308+211%

07Ogle County, ILIL51,399248+4033%

08▲16Kendall County, ILIL145,470157–

09▼3McHenry County, ILIL317,751145+37%

10▲1Champaign County, ILIL209,972138+221%

11▲7Sangamon County, ILIL194,170104–

12▼3Cass County, ILIL12,463102+155%

13Peoria County, ILIL178,55393+98%

14Madison County, ILIL263,11086+378%

15▼5St. Clair County, ILIL250,70881+1925%

16Wayne County, ILIL15,88279–

17▼1Lee County, ILIL32,91460+2900%

18▼11McLean County, ILIL171,41949+9%

19Clinton County, ILIL37,12834–

20▲2Knox County, ILIL47,76730–

21Greene County, ILIL11,31329–

22▲3Rock Island County, ILIL141,86928–

23Whiteside County, ILIL54,12126+73%

24Henry County, ILIL48,09525–

25▲1Macon County, ILIL99,30025−17%

26Vermilion County, ILIL71,25923–

27▲4Effingham County, ILIL34,51920–

28▼20Kankakee County, ILIL105,52520–

29Stephenson County, ILIL43,22020–

30▼1Macoupin County, ILIL43,74817–

31Montgomery County, ILIL28,07614–

32Logan County, ILIL27,18211+22%

33Fulton County, ILIL32,90110−68%

34▼6Brown County, ILIL6,4019–

35▼22Tazewell County, ILIL130,0499–

36Livingston County, ILIL35,0574–

37Henderson County, ILIL5,9843–

38▼15Randolph County, ILIL29,9213–

39Bond County, ILIL16,9592–

40Morgan County, ILIL32,5152–

SHOWING 1–40 OF 40

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