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 (2024 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. The median across all 66 is 0.1%. Biggest climber in the top 100 since 2020: Lee County, IL, up 42 places to #28.

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IllinoisAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPFINNISH SHAREVS 2010

01Jo Daviess County, ILIL21,5940.4%+0.2 pts

02▲9Carroll County, ILIL15,4190.3%–

03▲1Lake County, ILIL719,3390.3%−0.2 pts

04▲9Stephenson County, ILIL43,2200.3%+0.2 pts

05▲40Cass County, ILIL12,4630.3%+0.1 pts

06▲6McDonough County, ILIL25,9160.2%+0.2 pts

07Iroquois County, ILIL26,1500.2%+0.2 pts

08▼1DeKalb County, ILIL101,8350.2%−0.1 pts

09Woodford County, ILIL38,1110.2%+0.1 pts

10▼7McHenry County, ILIL317,7510.2%0.0 pts

11▲6Grundy County, ILIL54,0520.2%+0.1 pts

12▼3Winnebago County, ILIL283,6740.1%−0.1 pts

13▼5Ogle County, ILIL51,3990.1%0.0 pts

14▲2DuPage County, ILIL934,2980.1%−0.1 pts

15Kane County, ILIL525,7570.1%−0.1 pts

16▲36Fayette County, ILIL20,7900.1%+0.1 pts

17▲19Pope County, ILIL3,6720.1%–

18White County, ILIL13,2500.1%+0.1 pts

19▲30Warren County, ILIL16,2220.1%+0.1 pts

20▼18Fulton County, ILIL32,9010.1%+0.1 pts

21▼15Boone County, ILIL53,5680.1%−0.2 pts

22▲5McLean County, ILIL171,4190.1%0.0 pts

23Brown County, ILIL6,4010.1%–

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

25▲17Peoria County, ILIL178,5530.1%0.0 pts

26▼3LaSalle County, ILIL107,7730.1%0.0 pts

27▲1Rock Island County, ILIL141,8690.1%−0.1 pts

28▲42Lee County, ILIL32,9140.1%0.0 pts

29▼10Will County, ILIL712,2530.1%0.0 pts

30▲21Macoupin County, ILIL43,7480.1%−0.1 pts

31▼1Henry County, ILIL48,0950.1%0.0 pts

32▲14Adams County, ILIL64,2670.1%0.0 pts

33▼11Champaign County, ILIL209,9720.1%0.0 pts

34▲20Marion County, ILIL36,3820.1%0.0 pts

35▼2Sangamon County, ILIL194,1700.1%0.0 pts

36▲11Vermilion County, ILIL71,2590.1%0.0 pts

37Randolph County, ILIL29,9210.1%–

38▼4Marshall County, ILIL11,4730.1%−0.2 pts

39▼8Tazewell County, ILIL130,0490.0%−0.1 pts

40▼30Hancock County, ILIL16,8030.0%−0.1 pts

41▼20Kendall County, ILIL145,4700.0%−0.2 pts

42▲22Shelby County, ILIL20,5760.0%0.0 pts

43▲22Macon County, ILIL99,3000.0%0.0 pts

44▼5Jefferson County, ILIL36,1470.0%0.0 pts

45▼8Union County, ILIL16,6560.0%0.0 pts

46▼3Pike County, ILIL14,2310.0%–

47▼15Madison County, ILIL263,1100.0%−0.1 pts

48▼30Bureau County, ILIL32,5100.0%−0.2 pts

49Mason County, ILIL12,4110.0%–

50▲5Clinton County, ILIL37,1280.0%−0.1 pts

51▼13Whiteside County, ILIL54,1210.0%−0.2 pts

52▼26Jackson County, ILIL52,5010.0%0.0 pts

53▲7Perry County, ILIL20,1600.0%–

54▼25Monroe County, ILIL34,8400.0%–

55▼14Kankakee County, ILIL105,5250.0%0.0 pts

56▲3Scott County, ILIL4,8660.0%–

57Douglas County, ILIL19,8800.0%−0.1 pts

58▼1Knox County, ILIL47,7670.0%−0.1 pts

59▼19Franklin County, ILIL36,9160.0%−0.1 pts

60▲1Livingston County, ILIL35,0570.0%−0.1 pts

61▼11St. Clair County, ILIL250,7080.0%0.0 pts

62▲6Mercer County, ILIL15,2290.0%–

63▼19Morgan County, ILIL32,5150.0%−0.1 pts

64▼8Edgar County, ILIL16,3230.0%–

65▼45Coles County, ILIL46,6070.0%–

66▼61Montgomery County, ILIL28,0760.0%0.0 pts

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES