RANKING · 2024 ACS · 66 SHOWN OF 66

Highest Finnish population share, Illinois counties

Illinois counties ranked by the share of all residents who are Finnish ancestry (2023 American Community Survey). A concentration measure: Finnish residents as a percentage of total population. This list covers the 66 counties in Illinois that qualify, ranked against each other statewide.

IllinoisAll states All rankings

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 2000

01Jo Daviess County, ILIL21,5940.4%–

02Carroll County, ILIL15,4190.3%–

03Lake County, ILIL719,3390.3%–

04Stephenson County, ILIL43,2200.3%–

05Cass County, ILIL12,4630.3%–

06McDonough County, ILIL25,9160.2%–

07Iroquois County, ILIL26,1500.2%–

08DeKalb County, ILIL101,8350.2%–

09Woodford County, ILIL38,1110.2%–

10McHenry County, ILIL317,7510.2%–

11Grundy County, ILIL54,0520.2%–

12Winnebago County, ILIL283,6740.1%–

13Ogle County, ILIL51,3990.1%–

14DuPage County, ILIL934,2980.1%–

15Kane County, ILIL525,7570.1%–

16Fayette County, ILIL20,7900.1%–

17Pope County, ILIL3,6720.1%–

18White County, ILIL13,2500.1%–

19Warren County, ILIL16,2220.1%–

20Fulton County, ILIL32,9010.1%–

21Boone County, ILIL53,5680.1%–

22McLean County, ILIL171,4190.1%–

23Brown County, ILIL6,4010.1%–

24Cook County, ILIL5,194,6250.1%–

25Peoria County, ILIL178,5530.1%–

26LaSalle County, ILIL107,7730.1%–

27Rock Island County, ILIL141,8690.1%–

28Lee County, ILIL32,9140.1%–

29Will County, ILIL712,2530.1%–

30Macoupin County, ILIL43,7480.1%–

31Henry County, ILIL48,0950.1%–

32Adams County, ILIL64,2670.1%–

33Champaign County, ILIL209,9720.1%–

34Marion County, ILIL36,3820.1%–

35Sangamon County, ILIL194,1700.1%–

36Vermilion County, ILIL71,2590.1%–

37Randolph County, ILIL29,9210.1%–

38Marshall County, ILIL11,4730.1%–

39Tazewell County, ILIL130,0490.0%–

40Hancock County, ILIL16,8030.0%–

41Kendall County, ILIL145,4700.0%–

42Shelby County, ILIL20,5760.0%–

43Macon County, ILIL99,3000.0%–

44Jefferson County, ILIL36,1470.0%–

45Union County, ILIL16,6560.0%–

46Pike County, ILIL14,2310.0%–

47Madison County, ILIL263,1100.0%–

48Bureau County, ILIL32,5100.0%–

49Mason County, ILIL12,4110.0%–

50Clinton County, ILIL37,1280.0%–

51Whiteside County, ILIL54,1210.0%–

52Jackson County, ILIL52,5010.0%–

53Perry County, ILIL20,1600.0%–

54Monroe County, ILIL34,8400.0%–

55Kankakee County, ILIL105,5250.0%–

56Scott County, ILIL4,8660.0%–

57Douglas County, ILIL19,8800.0%–

58Knox County, ILIL47,7670.0%–

59Franklin County, ILIL36,9160.0%–

60Livingston County, ILIL35,0570.0%–

61St. Clair County, ILIL250,7080.0%–

62Mercer County, ILIL15,2290.0%–

63Morgan County, ILIL32,5150.0%–

64Edgar County, ILIL16,3230.0%–

65Coles County, ILIL46,6070.0%–

66Montgomery County, ILIL28,0760.0%–

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES