RANKING · 2020 CENSUS · 70 SHOWN OF 70

Highest Finnish population share, Illinois counties · 2020

Illinois counties ranked by the share of all residents who are Finnish ancestry (2020 American Community Survey). A concentration measure: Finnish residents as a percentage of total population. This list covers the 70 counties in Illinois that qualify, ranked against each other statewide. The median across all 70 is 0.1%.

Finnish Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPFINNISH SHAREVS 2010

01Jo Daviess County, ILIL21,5940.5%+0.4 pts

02Fulton County, ILIL32,9010.4%+0.4 pts

03McHenry County, ILIL317,7510.4%+0.1 pts

04Lake County, ILIL719,3390.3%−0.3 pts

05Montgomery County, ILIL28,0760.3%+0.3 pts

06Boone County, ILIL53,5680.3%0.0 pts

07DeKalb County, ILIL101,8350.2%−0.1 pts

08Ogle County, ILIL51,3990.2%+0.1 pts

09Winnebago County, ILIL283,6740.2%0.0 pts

10Hancock County, ILIL16,8030.2%0.0 pts

11Carroll County, ILIL15,4190.2%–

12McDonough County, ILIL25,9160.2%+0.1 pts

13Stephenson County, ILIL43,2200.2%0.0 pts

14Ford County, ILIL13,2160.2%–

15Kane County, ILIL525,7570.2%0.0 pts

16DuPage County, ILIL934,2980.2%0.0 pts

17Grundy County, ILIL54,0520.1%+0.1 pts

18Bureau County, ILIL32,5100.1%−0.1 pts

19Will County, ILIL712,2530.1%0.0 pts

20Coles County, ILIL46,6070.1%–

21Kendall County, ILIL145,4700.1%−0.1 pts

22Champaign County, ILIL209,9720.1%0.0 pts

23LaSalle County, ILIL107,7730.1%0.0 pts

24Cook County, ILIL5,194,6250.1%0.0 pts

25Effingham County, ILIL34,5190.1%0.0 pts

26Jackson County, ILIL52,5010.1%0.0 pts

27McLean County, ILIL171,4190.1%0.0 pts

28Rock Island County, ILIL141,8690.1%−0.1 pts

29Monroe County, ILIL34,8400.1%–

30Henry County, ILIL48,0950.1%0.0 pts

31Tazewell County, ILIL130,0490.1%0.0 pts

32Madison County, ILIL263,1100.1%0.0 pts

33Sangamon County, ILIL194,1700.1%+0.1 pts

34Marshall County, ILIL11,4730.1%−0.1 pts

35Piatt County, ILIL16,7910.1%+0.1 pts

36Pope County, ILIL3,6720.1%–

37Union County, ILIL16,6560.1%0.0 pts

38Whiteside County, ILIL54,1210.1%−0.1 pts

39Jefferson County, ILIL36,1470.1%0.0 pts

40Franklin County, ILIL36,9160.1%−0.1 pts

41Kankakee County, ILIL105,5250.0%0.0 pts

42Peoria County, ILIL178,5530.0%0.0 pts

43Pike County, ILIL14,2310.0%–

44Morgan County, ILIL32,5150.0%−0.1 pts

45Cass County, ILIL12,4630.0%−0.2 pts

46Adams County, ILIL64,2670.0%−0.1 pts

47Vermilion County, ILIL71,2590.0%0.0 pts

48Williamson County, ILIL67,2250.0%0.0 pts

49Warren County, ILIL16,2220.0%0.0 pts

50St. Clair County, ILIL250,7080.0%0.0 pts

51Macoupin County, ILIL43,7480.0%−0.1 pts

52Fayette County, ILIL20,7900.0%0.0 pts

53Johnson County, ILIL13,3630.0%–

54Marion County, ILIL36,3820.0%0.0 pts

55Clinton County, ILIL37,1280.0%−0.1 pts

56Edgar County, ILIL16,3230.0%–

57Knox County, ILIL47,7670.0%−0.1 pts

58Logan County, ILIL27,1820.0%0.0 pts

59Scott County, ILIL4,8660.0%–

60Perry County, ILIL20,1600.0%–

61Livingston County, ILIL35,0570.0%−0.1 pts

62Moultrie County, ILIL14,3710.0%0.0 pts

63Christian County, ILIL33,4430.0%−0.1 pts

64Shelby County, ILIL20,5760.0%−0.1 pts

65Macon County, ILIL99,3000.0%0.0 pts

66Saline County, ILIL22,7720.0%−0.1 pts

67Washington County, ILIL13,5640.0%–

68Mercer County, ILIL15,2290.0%–

69Wayne County, ILIL15,8820.0%–

70Lee County, ILIL32,9140.0%0.0 pts

SHOWING 1–70 OF 70

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