RANKING · 2020 CENSUS · 73 SHOWN OF 73

Highest Finnish population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Finnish ancestry (2020 American Community Survey). A concentration measure: Finnish residents as a percentage of total population. This list covers the 73 counties in Iowa 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 SHAREVS 2010

01Benton County, IAIA26,0040.8%+0.7 pts

02Ida County, IAIA6,7770.5%+0.3 pts

03Monroe County, IAIA7,4060.3%+0.1 pts

04Winneshiek County, IAIA19,7330.3%−0.3 pts

05Mills County, IAIA14,7930.3%+0.3 pts

06Adams County, IAIA3,6170.3%–

07Clay County, IAIA16,2020.2%+0.2 pts

08Warren County, IAIA57,3310.2%+0.1 pts

09Adair County, IAIA7,4030.2%+0.1 pts

10Hancock County, IAIA10,5280.2%–

11Grundy County, IAIA12,3610.2%+0.2 pts

12Worth County, IAIA7,3380.2%+0.1 pts

13Madison County, IAIA17,2700.2%+0.1 pts

14Boone County, IAIA26,7990.2%+0.1 pts

15Linn County, IAIA232,0280.2%+0.0 pts

16Story County, IAIA101,2910.2%+0.1 pts

17Muscatine County, IAIA41,8530.2%−0.2 pts

18Cedar County, IAIA18,3590.1%−0.0 pts

19Johnson County, IAIA160,0440.1%+0.0 pts

20Sac County, IAIA9,5250.1%−0.1 pts

21Harrison County, IAIA14,6230.1%+0.1 pts

22Calhoun County, IAIA9,5620.1%–

23Decatur County, IAIA7,6550.1%–

24Black Hawk County, IAIA131,5320.1%−0.0 pts

25Mahaska County, IAIA21,8800.1%+0.0 pts

26Fremont County, IAIA6,5220.1%+0.0 pts

27Hamilton County, IAIA14,9440.1%+0.1 pts

28Union County, IAIA11,8290.1%–

29Humboldt County, IAIA9,4090.1%–

30Woodbury County, IAIA106,6490.1%+0.0 pts

31Mitchell County, IAIA10,6500.1%−0.1 pts

32Greene County, IAIA8,6580.1%+0.1 pts

33O'Brien County, IAIA14,2200.1%–

34Buchanan County, IAIA20,8830.1%−0.0 pts

35Page County, IAIA14,8560.1%+0.0 pts

36Marion County, IAIA34,1920.1%+0.0 pts

37Dallas County, IAIA118,4570.1%−0.2 pts

38Pottawattamie County, IAIA92,9960.1%+0.0 pts

39Iowa County, IAIA16,5040.1%–

40Bremer County, IAIA25,2960.1%–

41Polk County, IAIA516,5460.1%−0.0 pts

42Cerro Gordo County, IAIA42,3720.1%−0.1 pts

43Kossuth County, IAIA14,3220.1%−0.0 pts

44Scott County, IAIA175,2590.1%−0.0 pts

45Washington County, IAIA22,6670.1%–

46Jasper County, IAIA38,1530.1%−0.1 pts

47Dubuque County, IAIA99,3810.1%−0.0 pts

48Clinton County, IAIA46,0020.0%−0.1 pts

49Jefferson County, IAIA15,2910.0%−0.1 pts

50Marshall County, IAIA39,8900.0%−0.0 pts

51Crawford County, IAIA16,2370.0%−0.1 pts

52Carroll County, IAIA20,3030.0%−0.0 pts

53Poweshiek County, IAIA18,3680.0%−0.1 pts

54Lee County, IAIA32,3060.0%−0.0 pts

55Butler County, IAIA14,0490.0%+0.0 pts

56Osceola County, IAIA5,9800.0%–

57Appanoose County, IAIA12,0770.0%−0.2 pts

58Monona County, IAIA8,5390.0%−0.1 pts

59Palo Alto County, IAIA8,8990.0%−0.1 pts

60Des Moines County, IAIA38,0770.0%−0.0 pts

61Buena Vista County, IAIA20,4490.0%−0.2 pts

62Plymouth County, IAIA25,6970.0%−0.1 pts

63Chickasaw County, IAIA11,6630.0%−0.0 pts

64Wright County, IAIA12,8010.0%−0.0 pts

65Van Buren County, IAIA7,1310.0%−0.2 pts

66Floyd County, IAIA14,9010.0%−0.2 pts

67Tama County, IAIA16,7960.0%–

68Dickinson County, IAIA18,0770.0%−0.1 pts

69Cherokee County, IAIA11,3690.0%−0.0 pts

70Webster County, IAIA36,8380.0%−0.1 pts

71Wapello County, IAIA35,2100.0%–

72Jackson County, IAIA19,2880.0%−0.1 pts

73Jones County, IAIA21,2530.0%–

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS