RANKING · 2020 CENSUS · 55 SHOWN OF 55

Highest Spaniard population share, Illinois counties · 2020

Illinois counties ranked by the share of all residents who are Spaniard origin (2020 American Community Survey). A concentration measure: Spaniard residents as a percentage of total population. This list covers the 55 counties in Illinois that qualify, ranked against each other statewide.

Spaniard 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

RANKPLACESTATEPOPSPANIARD SHAREVS 2010

01McHenry County, ILIL317,7510.3%+0.2 pts

02Winnebago County, ILIL283,6740.2%+0.1 pts

03St. Clair County, ILIL250,7080.2%+0.1 pts

04Champaign County, ILIL209,9720.2%+0.2 pts

05Will County, ILIL712,2530.2%+0.1 pts

06Vermilion County, ILIL71,2590.2%–

07Henderson County, ILIL5,9840.2%+0.1 pts

08Jefferson County, ILIL36,1470.2%+0.2 pts

09Kane County, ILIL525,7570.2%+0.0 pts

10Rock Island County, ILIL141,8690.2%+0.1 pts

11Ford County, ILIL13,2160.2%–

12Cook County, ILIL5,194,6250.2%+0.1 pts

13DuPage County, ILIL934,2980.1%+0.0 pts

14Logan County, ILIL27,1820.1%+0.1 pts

15Putnam County, ILIL5,6190.1%–

16Whiteside County, ILIL54,1210.1%+0.0 pts

17Lake County, ILIL719,3390.1%+0.0 pts

18Morgan County, ILIL32,5150.1%+0.1 pts

19Clinton County, ILIL37,1280.1%+0.0 pts

20Union County, ILIL16,6560.1%–

21Jersey County, ILIL21,1600.1%–

22Boone County, ILIL53,5680.1%–

23Jackson County, ILIL52,5010.1%+0.0 pts

24Carroll County, ILIL15,4190.1%–

25Ogle County, ILIL51,3990.1%−0.0 pts

26McDonough County, ILIL25,9160.1%+0.1 pts

27Madison County, ILIL263,1100.1%+0.0 pts

28Stephenson County, ILIL43,2200.1%+0.0 pts

29McLean County, ILIL171,4190.1%+0.0 pts

30Bureau County, ILIL32,5100.1%−0.2 pts

31Williamson County, ILIL67,2250.1%−0.0 pts

32Kankakee County, ILIL105,5250.1%−0.0 pts

33Bond County, ILIL16,9590.1%–

34Knox County, ILIL47,7670.1%+0.0 pts

35Sangamon County, ILIL194,1700.1%+0.0 pts

36Peoria County, ILIL178,5530.1%−0.0 pts

37Macon County, ILIL99,3000.1%+0.0 pts

38Hancock County, ILIL16,8030.1%–

39Washington County, ILIL13,5640.1%−0.1 pts

40Fulton County, ILIL32,9010.0%+0.0 pts

41DeKalb County, ILIL101,8350.0%−0.0 pts

42Grundy County, ILIL54,0520.0%−0.2 pts

43Lee County, ILIL32,9140.0%−0.1 pts

44Kendall County, ILIL145,4700.0%−0.1 pts

45Tazewell County, ILIL130,0490.0%+0.0 pts

46LaSalle County, ILIL107,7730.0%+0.0 pts

47Saline County, ILIL22,7720.0%–

48Johnson County, ILIL13,3630.0%–

49Greene County, ILIL11,3130.0%–

50Marshall County, ILIL11,4730.0%–

51Douglas County, ILIL19,8800.0%–

52Montgomery County, ILIL28,0760.0%–

53Randolph County, ILIL29,9210.0%–

54Henry County, ILIL48,0950.0%−0.0 pts

55Adams County, ILIL64,2670.0%−0.1 pts

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS