RANKING · 2024 ACS · 56 SHOWN OF 56

Highest Canadian population share, Iowa counties

Iowa counties ranked by the share of all residents who are Canadian ancestry (2024 American Community Survey). A concentration measure: Canadian residents as a percentage of total population. This list covers the 56 counties in Iowa that qualify, ranked against each other statewide. The median across all 56 is 0.1%. Biggest climber in the top 100 since 2020: Grundy County, IA, up 54 places to #3.

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IowaAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPCANADIAN SHAREVS 2010

01Monroe County, IAIA7,4060.4%–

02▲2Poweshiek County, IAIA18,3680.3%+0.3 pts

03▲54Grundy County, IAIA12,3610.3%–

04▲5Hardin County, IAIA16,4550.3%0.0 pts

05▲41Dickinson County, IAIA18,0770.3%+0.2 pts

06▲41Carroll County, IAIA20,3030.3%–

07▲19Story County, IAIA101,2910.2%0.0 pts

08Taylor County, IAIA5,8350.2%+0.1 pts

09▲11Winnebago County, IAIA10,2510.2%–

10▲13Des Moines County, IAIA38,0770.2%+0.2 pts

11▲28Decatur County, IAIA7,6550.2%−0.8 pts

12Iowa County, IAIA16,5040.2%+0.1 pts

13▲1Sioux County, IAIA36,7740.1%0.0 pts

14▼8Warren County, IAIA57,3310.1%0.0 pts

15▼13Clayton County, IAIA16,8450.1%+0.1 pts

16Louisa County, IAIA10,4160.1%0.0 pts

17▲35Ida County, IAIA6,7770.1%–

18▼13Howard County, IAIA9,4150.1%−0.1 pts

19▼4Fremont County, IAIA6,5220.1%–

20▲42Jasper County, IAIA38,1530.1%+0.1 pts

21Palo Alto County, IAIA8,8990.1%−0.1 pts

22▲42Lee County, IAIA32,3060.1%−0.1 pts

23Butler County, IAIA14,0490.1%+0.1 pts

24▲16Clinton County, IAIA46,0020.1%−0.1 pts

25Ringgold County, IAIA4,6420.1%–

26▲1Woodbury County, IAIA106,6490.1%0.0 pts

27▲46Boone County, IAIA26,7990.1%0.0 pts

28▼16Linn County, IAIA232,0280.1%0.0 pts

29Mills County, IAIA14,7930.1%−0.2 pts

30▲1Polk County, IAIA516,5460.1%−0.1 pts

31▲39Buchanan County, IAIA20,8830.1%–

32▲2Scott County, IAIA175,2590.1%−0.1 pts

33▲22Marshall County, IAIA39,8900.1%0.0 pts

34▼21Chickasaw County, IAIA11,6630.1%−0.1 pts

35Worth County, IAIA7,3380.1%−0.1 pts

36Webster County, IAIA36,8380.1%−0.1 pts

37▲21Union County, IAIA11,8290.1%−0.1 pts

38▲30Monona County, IAIA8,5390.0%0.0 pts

39▼10Johnson County, IAIA160,0440.0%−0.1 pts

40▲13Jackson County, IAIA19,2880.0%−0.2 pts

41▼17Washington County, IAIA22,6670.0%−0.2 pts

42▲2Black Hawk County, IAIA131,5320.0%0.0 pts

43Cherokee County, IAIA11,3690.0%–

44▼3Pottawattamie County, IAIA92,9960.0%0.0 pts

45▼17Marion County, IAIA34,1920.0%−0.1 pts

46▲21Dubuque County, IAIA99,3810.0%−0.1 pts

47▼15Franklin County, IAIA9,8680.0%−0.3 pts

48Mitchell County, IAIA10,6500.0%–

49▼30Cerro Gordo County, IAIA42,3720.0%0.0 pts

50▲15Lyon County, IAIA12,3540.0%0.0 pts

51▼14Dallas County, IAIA118,4570.0%−0.2 pts

52▼17Wapello County, IAIA35,2100.0%−0.2 pts

53▲6Bremer County, IAIA25,2960.0%0.0 pts

54Harrison County, IAIA14,6230.0%−0.2 pts

55▼47Cedar County, IAIA18,3590.0%−0.1 pts

56▼26Mahaska County, IAIA21,8800.0%–

SHOWING 1–56 OF 56

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