RANKING · 2020 CENSUS · 73 SHOWN OF 73

Largest Canadian population, Iowa counties · 2020

Iowa counties ranked by the number of residents who are Canadian ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 73 counties in Iowa that qualify, ranked against each other statewide.

Canadian 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

RANKPLACESTATEPOPCANADIAN POPULATIONVS 2010

01Polk County, IAIA516,546495−6%

02Linn County, IAIA232,028397+89%

03Scott County, IAIA175,259170−47%

04Johnson County, IAIA160,044158−33%

05Warren County, IAIA57,331121+137%

06Woodbury County, IAIA106,649116+55%

07Story County, IAIA101,291116−35%

08Black Hawk County, IAIA131,53288+40%

09Dallas County, IAIA118,45777−39%

10Pottawattamie County, IAIA92,99667+24%

11Cerro Gordo County, IAIA42,37265+550%

12Sioux County, IAIA36,77461+30%

13Clayton County, IAIA16,84557+1800%

14Des Moines County, IAIA38,07752+271%

15Wayne County, IAIA6,73849–

16Poweshiek County, IAIA18,36848+182%

17Cedar County, IAIA18,35941+64%

18Marion County, IAIA34,19236+29%

19Clinton County, IAIA46,00235−65%

20Hardin County, IAIA16,45535−38%

21Wapello County, IAIA35,21034−55%

22Clay County, IAIA16,20233+43%

23Webster County, IAIA36,83831−23%

24Buena Vista County, IAIA20,44931+41%

25Jefferson County, IAIA15,29130−74%

26Sac County, IAIA9,52529+93%

27Washington County, IAIA22,66728−43%

28Fayette County, IAIA19,04727+108%

29Floyd County, IAIA14,90126+550%

30Howard County, IAIA9,41524+14%

31Muscatine County, IAIA41,85324–

32Mahaska County, IAIA21,88023–

33Emmet County, IAIA9,10722–

34Chickasaw County, IAIA11,66321+50%

35Hamilton County, IAIA14,94420+43%

36Benton County, IAIA26,00420+43%

37Keokuk County, IAIA9,79719+27%

38Madison County, IAIA17,27016−16%

39Winnebago County, IAIA10,25115–

40Marshall County, IAIA39,89014−18%

41Dubuque County, IAIA99,38113−89%

42Hancock County, IAIA10,52813+30%

43Plymouth County, IAIA25,69713−58%

44Fremont County, IAIA6,52212–

45Carroll County, IAIA20,30312–

46Dickinson County, IAIA18,07711+22%

47Tama County, IAIA16,79611+10%

48Franklin County, IAIA9,86810−69%

49Jackson County, IAIA19,2888−82%

50Bremer County, IAIA25,2968−20%

51Jasper County, IAIA38,1538+0%

52O'Brien County, IAIA14,2207+133%

53Decatur County, IAIA7,6556−93%

54Greene County, IAIA8,6586–

55Lee County, IAIA32,3066−90%

56Harrison County, IAIA14,6235−81%

57Page County, IAIA14,8565−72%

58Adair County, IAIA7,4035−62%

59Crawford County, IAIA16,2374−64%

60Grundy County, IAIA12,3614–

61Union County, IAIA11,8294−81%

62Ida County, IAIA6,7773–

63Montgomery County, IAIA10,0023−25%

64Adams County, IAIA3,6172−60%

65Boone County, IAIA26,7992−94%

66Buchanan County, IAIA20,8832–

67Humboldt County, IAIA9,4092–

68Lyon County, IAIA12,3542−33%

69Winneshiek County, IAIA19,7332−78%

70Cass County, IAIA12,9601−80%

71Monona County, IAIA8,5391−67%

72Pocahontas County, IAIA6,8191–

73Appanoose County, IAIA12,0771−80%

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS