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.

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 POPULATIONVS 2010

01Cook County, ILIL5,194,6255,666−4%

02Lake County, ILIL719,3392,351−41%

03DuPage County, ILIL934,2981,330−29%

04Kane County, ILIL525,757718−33%

05McHenry County, ILIL317,751633−11%

06Will County, ILIL712,253565−33%

07Winnebago County, ILIL283,674421−43%

08DeKalb County, ILIL101,835215−30%

09McLean County, ILIL171,419196+15%

10Peoria County, ILIL178,553187+56%

11Stephenson County, ILIL43,220141+86%

12Rock Island County, ILIL141,869136−52%

13Champaign County, ILIL209,972136−19%

14Sangamon County, ILIL194,170120+216%

15LaSalle County, ILIL107,773107+22%

16Madison County, ILIL263,11091−72%

17Grundy County, ILIL54,05290+137%

18Jo Daviess County, ILIL21,59482+165%

19Woodford County, ILIL38,11179+49%

20Ogle County, ILIL51,39975−19%

21McDonough County, ILIL25,91667+168%

22Boone County, ILIL53,56861−62%

23Kendall County, ILIL145,47061−77%

24Tazewell County, ILIL130,04961−54%

25Iroquois County, ILIL26,15057+5600%

26Carroll County, ILIL15,41953–

27Vermilion County, ILIL71,25944+300%

28Adams County, ILIL64,26743−41%

29Cass County, ILIL12,46339+39%

30Fulton County, ILIL32,90139+333%

31Macon County, ILIL99,30038+124%

32St. Clair County, ILIL250,70835−70%

33Henry County, ILIL48,09533−31%

34Macoupin County, ILIL43,74831−47%

35Lee County, ILIL32,91430+67%

36Fayette County, ILIL20,79029+480%

37Kankakee County, ILIL105,52523−54%

38Marion County, ILIL36,38223+44%

39Warren County, ILIL16,22221+200%

40White County, ILIL13,25018+500%

41Randolph County, ILIL29,92117–

42Whiteside County, ILIL54,12116−85%

43Jackson County, ILIL52,50115−65%

44Jefferson County, ILIL36,14713−7%

45Clinton County, ILIL37,12811−73%

46Bureau County, ILIL32,51011−87%

47Monroe County, ILIL34,8408–

48Hancock County, ILIL16,8038−77%

49Knox County, ILIL47,7678−85%

50Shelby County, ILIL20,5768−50%

51Brown County, ILIL6,4017–

52Franklin County, ILIL36,9166−90%

53Marshall County, ILIL11,4736−79%

54Union County, ILIL16,6566−50%

55Livingston County, ILIL35,0575−83%

56Perry County, ILIL20,1605–

57Pike County, ILIL14,2315–

58Pope County, ILIL3,6725–

59Douglas County, ILIL19,8804−73%

60Mason County, ILIL12,4114–

61Coles County, ILIL46,6072–

62Morgan County, ILIL32,5152−95%

63Edgar County, ILIL16,3231–

64Mercer County, ILIL15,2291–

65Montgomery County, ILIL28,0761−50%

66Scott County, ILIL4,8661–

SHOWING 1–66 OF 66

Download CSV (full list, 66 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES