RANKING · 2020 CENSUS · 73 SHOWN OF 73

Highest Canadian population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Canadian ancestry (2020 American Community Survey). A concentration measure: Canadian residents as a percentage of total population. This list covers the 73 counties in Iowa that qualify, ranked against each other statewide. The median across all 73 is 0.1%.

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 SHAREVS 2010

01Wayne County, IAIA6,7380.8%–

02Clayton County, IAIA16,8450.3%+0.3 pts

03Sac County, IAIA9,5250.3%+0.2 pts

04Poweshiek County, IAIA18,3680.3%+0.2 pts

05Howard County, IAIA9,4150.3%0.0 pts

06Warren County, IAIA57,3310.2%+0.1 pts

07Emmet County, IAIA9,1070.2%–

08Cedar County, IAIA18,3590.2%+0.1 pts

09Hardin County, IAIA16,4550.2%−0.1 pts

10Clay County, IAIA16,2020.2%+0.1 pts

11Keokuk County, IAIA9,7970.2%0.0 pts

12Linn County, IAIA232,0280.2%+0.1 pts

13Chickasaw County, IAIA11,6630.2%+0.1 pts

14Sioux County, IAIA36,7740.2%0.0 pts

15Fremont County, IAIA6,5220.2%–

16Floyd County, IAIA14,9010.2%+0.1 pts

17Jefferson County, IAIA15,2910.2%−0.5 pts

18Buena Vista County, IAIA20,4490.2%0.0 pts

19Cerro Gordo County, IAIA42,3720.2%+0.1 pts

20Winnebago County, IAIA10,2510.1%–

21Fayette County, IAIA19,0470.1%+0.1 pts

22Hamilton County, IAIA14,9440.1%0.0 pts

23Des Moines County, IAIA38,0770.1%+0.1 pts

24Washington County, IAIA22,6670.1%−0.1 pts

25Hancock County, IAIA10,5280.1%0.0 pts

26Story County, IAIA101,2910.1%−0.1 pts

27Woodbury County, IAIA106,6490.1%0.0 pts

28Marion County, IAIA34,1920.1%0.0 pts

29Johnson County, IAIA160,0440.1%−0.1 pts

30Mahaska County, IAIA21,8800.1%–

31Polk County, IAIA516,5460.1%0.0 pts

32Franklin County, IAIA9,8680.1%−0.2 pts

33Madison County, IAIA17,2700.1%0.0 pts

34Scott County, IAIA175,2590.1%−0.1 pts

35Wapello County, IAIA35,2100.1%−0.1 pts

36Webster County, IAIA36,8380.1%0.0 pts

37Dallas County, IAIA118,4570.1%−0.1 pts

38Benton County, IAIA26,0040.1%0.0 pts

39Decatur County, IAIA7,6550.1%−0.9 pts

40Clinton County, IAIA46,0020.1%−0.1 pts

41Pottawattamie County, IAIA92,9960.1%0.0 pts

42Adair County, IAIA7,4030.1%−0.1 pts

43Greene County, IAIA8,6580.1%–

44Black Hawk County, IAIA131,5320.1%0.0 pts

45Tama County, IAIA16,7960.1%0.0 pts

46Dickinson County, IAIA18,0770.1%0.0 pts

47Carroll County, IAIA20,3030.1%–

48Muscatine County, IAIA41,8530.1%–

49Adams County, IAIA3,6170.1%−0.1 pts

50Plymouth County, IAIA25,6970.1%−0.1 pts

51O'Brien County, IAIA14,2200.1%0.0 pts

52Ida County, IAIA6,7770.0%–

53Jackson County, IAIA19,2880.0%−0.2 pts

54Harrison County, IAIA14,6230.0%−0.1 pts

55Marshall County, IAIA39,8900.0%0.0 pts

56Page County, IAIA14,8560.0%−0.1 pts

57Grundy County, IAIA12,3610.0%–

58Union County, IAIA11,8290.0%−0.1 pts

59Bremer County, IAIA25,2960.0%0.0 pts

60Montgomery County, IAIA10,0020.0%0.0 pts

61Crawford County, IAIA16,2370.0%0.0 pts

62Jasper County, IAIA38,1530.0%0.0 pts

63Humboldt County, IAIA9,4090.0%–

64Lee County, IAIA32,3060.0%−0.1 pts

65Lyon County, IAIA12,3540.0%0.0 pts

66Pocahontas County, IAIA6,8190.0%–

67Dubuque County, IAIA99,3810.0%−0.1 pts

68Monona County, IAIA8,5390.0%0.0 pts

69Winneshiek County, IAIA19,7330.0%0.0 pts

70Buchanan County, IAIA20,8830.0%–

71Appanoose County, IAIA12,0770.0%0.0 pts

72Cass County, IAIA12,9600.0%0.0 pts

73Boone County, IAIA26,7990.0%−0.1 pts

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