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%

06Story County, IAIA101,291116−35%

07Woodbury County, IAIA106,649116+55%

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%

23Buena Vista County, IAIA20,44931+41%

24Webster County, IAIA36,83831−23%

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%

35Benton County, IAIA26,00420+43%

36Hamilton County, IAIA14,94420+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%

44Carroll County, IAIA20,30312–

45Fremont County, IAIA6,52212–

46Dickinson County, IAIA18,07711+22%

47Tama County, IAIA16,79611+10%

48Franklin County, IAIA9,86810−69%

49Bremer County, IAIA25,2968−20%

50Jackson County, IAIA19,2888−82%

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%

56Adair County, IAIA7,4035−62%

57Harrison County, IAIA14,6235−81%

58Page County, IAIA14,8565−72%

59Union County, IAIA11,8294−81%

60Crawford County, IAIA16,2374−64%

61Grundy County, IAIA12,3614–

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%

70Appanoose County, IAIA12,0771−80%

71Cass County, IAIA12,9601−80%

72Monona County, IAIA8,5391−67%

73Pocahontas County, IAIA6,8191–

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS