RANKING · 2020 CENSUS · 55 SHOWN OF 55

Largest Spaniard population, Illinois counties · 2020

Illinois counties ranked by the number of residents who are Spaniard 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 55 counties in Illinois that qualify, ranked against each other statewide. The median across all 55 is 38.

Spaniard 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

RANKPLACESTATEPOPSPANIARD POPULATIONVS 2010

01Cook County, ILIL5,194,6257,755+63%

02DuPage County, ILIL934,2981,351+40%

03Will County, ILIL712,2531,343+114%

04Kane County, ILIL525,757938+8%

05McHenry County, ILIL317,751889+174%

06Lake County, ILIL719,339812+18%

07Winnebago County, ILIL283,674628+86%

08St. Clair County, ILIL250,708561+189%

09Champaign County, ILIL209,972420+367%

10Rock Island County, ILIL141,869240+264%

11Madison County, ILIL263,110228+109%

12Vermilion County, ILIL71,259142–

13McLean County, ILIL171,419106+7%

14Sangamon County, ILIL194,170102+73%

15Peoria County, ILIL178,55394−49%

16Whiteside County, ILIL54,12170+19%

17Jefferson County, ILIL36,14767+644%

18Kankakee County, ILIL105,52560−46%

19Jackson County, ILIL52,50154−4%

20Macon County, ILIL99,30053+15%

21Boone County, ILIL53,56851–

22DeKalb County, ILIL101,83546−10%

23Ogle County, ILIL51,39944−10%

24Tazewell County, ILIL130,04942+62%

25Clinton County, ILIL37,12841+3%

26Kendall County, ILIL145,47041−62%

27Logan County, ILIL27,18241+310%

28Morgan County, ILIL32,51538+100%

29Williamson County, ILIL67,22537−8%

30Stephenson County, ILIL43,22036+50%

31LaSalle County, ILIL107,77333−3%

32Knox County, ILIL47,76727+170%

33McDonough County, ILIL25,91626+333%

34Ford County, ILIL13,21622–

35Jersey County, ILIL21,16021–

36Bureau County, ILIL32,51019−76%

37Grundy County, ILIL54,05219−80%

38Union County, ILIL16,65618–

39Fulton County, ILIL32,90117+21%

40Carroll County, ILIL15,41913–

41Henderson County, ILIL5,98412+300%

42Lee County, ILIL32,91411−77%

43Bond County, ILIL16,9599–

44Hancock County, ILIL16,8039–

45Putnam County, ILIL5,6198–

46Saline County, ILIL22,7727–

47Washington County, ILIL13,5647−59%

48Montgomery County, ILIL28,0764–

49Douglas County, ILIL19,8803–

50Greene County, ILIL11,3133–

51Henry County, ILIL48,0953−87%

52Johnson County, ILIL13,3633–

53Randolph County, ILIL29,9213–

54Adams County, ILIL64,2672−95%

55Marshall County, ILIL11,4732–

SHOWING 1–55 OF 55

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