RANKING · 2024 ACS · 66 SHOWN OF 66

Largest Finnish population, Illinois counties

Illinois counties ranked by the number of residents who are Finnish ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 66 counties in Illinois that qualify, ranked against each other statewide. The median across all 66 is 33. Biggest climber in the top 100 since 2020: Lee County, IL, up 29 places to #35.

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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 POPULATIONVS 2010

01Cook County, ILIL5,194,6255,666−4%

02Lake County, ILIL719,3392,351−41%

03DuPage County, ILIL934,2981,330−29%

04▲2Kane County, ILIL525,757718−33%

05▼1McHenry County, ILIL317,751633−11%

06▼1Will County, ILIL712,253565−33%

07Winnebago County, ILIL283,674421−43%

08▲1DeKalb County, ILIL101,835215−30%

09▲2McLean County, ILIL171,419196+15%

10▲13Peoria County, ILIL178,553187+56%

11▲13Stephenson County, ILIL43,220141+86%

12▲2Rock Island County, ILIL141,869136−52%

13▼5Champaign County, ILIL209,972136−19%

14▼1Sangamon County, ILIL194,170120+216%

15▲2LaSalle County, ILIL107,773107+22%

16▼6Madison County, ILIL263,11091−72%

17▲8Grundy County, ILIL54,05290+137%

18▲2Jo Daviess County, ILIL21,59482+165%

19Woodford County, ILIL38,11179+49%

20▼2Ogle County, ILIL51,39975−19%

21▲7McDonough County, ILIL25,91667+168%

22▼6Boone County, ILIL53,56861−62%

23▼11Kendall County, ILIL145,47061−77%

24▼5Tazewell County, ILIL130,04961−54%

25Iroquois County, ILIL26,15057+5600%

26▲10Carroll County, ILIL15,41953–

27▲10Vermilion County, ILIL71,25944+300%

28▲10Adams County, ILIL64,26743−41%

29▲28Cass County, ILIL12,46339+39%

30▼15Fulton County, ILIL32,90139+333%

31▲19Macon County, ILIL99,30038+124%

32▼10St. Clair County, ILIL250,70835−70%

33▼2Henry County, ILIL48,09533−31%

34▲9Macoupin County, ILIL43,74831−47%

35▲29Lee County, ILIL32,91430+67%

36▲16Fayette County, ILIL20,79029+480%

37▼8Kankakee County, ILIL105,52523−54%

38▲7Marion County, ILIL36,38223+44%

39▲17Warren County, ILIL16,22221+200%

40White County, ILIL13,25018+500%

41Randolph County, ILIL29,92117–

42▼8Whiteside County, ILIL54,12116−85%

43▼16Jackson County, ILIL52,50115−65%

44▼3Jefferson County, ILIL36,14713−7%

45▲4Clinton County, ILIL37,12811−73%

46▼16Bureau County, ILIL32,51011−87%

47▼12Monroe County, ILIL34,8408–

48▼15Hancock County, ILIL16,8038−77%

49▼1Knox County, ILIL47,7678−85%

50▲16Shelby County, ILIL20,5768−50%

51Brown County, ILIL6,4017–

52▼10Franklin County, ILIL36,9166−90%

53▼2Marshall County, ILIL11,4736−79%

54▼7Union County, ILIL16,6566−50%

55▼1Livingston County, ILIL35,0575−83%

56▲5Perry County, ILIL20,1605–

57▼4Pike County, ILIL14,2315–

58▲4Pope County, ILIL3,6725–

59Douglas County, ILIL19,8804−73%

60Mason County, ILIL12,4114–

61▼35Coles County, ILIL46,6072–

62▼18Morgan County, ILIL32,5152−95%

63▼4Edgar County, ILIL16,3231–

64▲3Mercer County, ILIL15,2291–

65▼44Montgomery County, ILIL28,0761−50%

66▲2Scott County, ILIL4,8661–

SHOWING 1–66 OF 66

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