RANKING · 2020 CENSUS · 70 SHOWN OF 70

Largest South American population, Illinois counties · 2020

Illinois counties ranked by the number of residents who are South American 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 70 counties in Illinois that qualify, ranked against each other statewide. The median across all 70 is 35.

South Americans: full group profile →

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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

RANKPLACESTATEPOPSOUTH AMERICAN POPULATIONVS 2010

01Cook County, ILIL5,194,62564,647+28%

02DuPage County, ILIL934,2987,425+17%

03Lake County, ILIL719,3394,389+4%

04Will County, ILIL712,2532,7900%

05Kane County, ILIL525,7572,767+29%

06McHenry County, ILIL317,7511,884+91%

07Champaign County, ILIL209,972971−6%

08Winnebago County, ILIL283,674838−10%

09DeKalb County, ILIL101,835819+180%

10McLean County, ILIL171,419665+185%

11Kendall County, ILIL145,470422−18%

12Peoria County, ILIL178,553409+62%

13Rock Island County, ILIL141,869362+122%

14Sangamon County, ILIL194,170305−36%

15Madison County, ILIL263,110285+161%

16Macon County, ILIL99,300256−30%

17Kankakee County, ILIL105,525227+116%

18Boone County, ILIL53,568162−37%

19Jackson County, ILIL52,501160−27%

20St. Clair County, ILIL250,708147−60%

21Logan County, ILIL27,182107+723%

22Tazewell County, ILIL130,049103+63%

23Stephenson County, ILIL43,22097+646%

24Adams County, ILIL64,26784+27%

25Macoupin County, ILIL43,74877–

26Iroquois County, ILIL26,15074+640%

27LaSalle County, ILIL107,77372−73%

28Fulton County, ILIL32,90169+82%

29Henry County, ILIL48,09563−35%

30Vermilion County, ILIL71,25952−56%

31Warren County, ILIL16,22251+240%

32Lee County, ILIL32,91450+56%

33McDonough County, ILIL25,91639+144%

34Jersey County, ILIL21,16036+9%

35Grundy County, ILIL54,05235+192%

36Menard County, ILIL11,86334+62%

37Shelby County, ILIL20,57630–

38Williamson County, ILIL67,22530−75%

39Moultrie County, ILIL14,37129–

40Marion County, ILIL36,38228+367%

41Massac County, ILIL13,50226+117%

42Mercer County, ILIL15,22925–

43Jo Daviess County, ILIL21,59423–

44Richland County, ILIL15,21923–

45Washington County, ILIL13,56423–

46Bond County, ILIL16,95919−86%

47Coles County, ILIL46,60716−60%

48Livingston County, ILIL35,05716−75%

49White County, ILIL13,25016–

50Whiteside County, ILIL54,12116−80%

51Pulaski County, ILIL4,82015+200%

52Woodford County, ILIL38,11115–

53Knox County, ILIL47,76714−96%

54Bureau County, ILIL32,51013−86%

55Douglas County, ILIL19,88013+8%

56Franklin County, ILIL36,91612–

57Morgan County, ILIL32,51512–

58Ford County, ILIL13,21611+450%

59Lawrence County, ILIL13,7909–

60Brown County, ILIL6,4019–

61Marshall County, ILIL11,4739+200%

62Ogle County, ILIL51,3999−18%

63Hancock County, ILIL16,8037–

64Cass County, ILIL12,4636–

65Effingham County, ILIL34,5193–

66Jefferson County, ILIL36,1473−67%

67Pike County, ILIL14,2312–

68Crawford County, ILIL18,6481–

69Greene County, ILIL11,3131–

70Jasper County, ILIL9,0321–

SHOWING 1–70 OF 70

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